Home / 156,988,415,556.81-216,642,911,393.03-85,703,045,580.81

Finding the Fourth Proportional to 156,988,415,556.81, 216,642,911,393.03 and 85,703,045,580.81

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Solution

The fourth proportional to 156,988,415,556.81, 216,642,911,393.03 and 85,703,045,580.81 is: 118,269,601,257.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,988,415,556.81 : 216,642,911,393.03 = 85,703,045,580.81 : x
  2. Step 2: Convert to fraction form
    156,988,415,556.81/216,642,911,393.03 = 85,703,045,580.81/x
  3. Step 3: Cross multiply
    156,988,415,556.81x = 216,642,911,393.03 × 85,703,045,580.81
  4. Step 4: Simplify right side
    156,988,415,556.81x = 18,566,957,309,876,231,995,392
  5. Step 5: Solve for x
    x = 18,566,957,309,876,231,995,392/156,988,415,556.81
  6. Step 6: Final answer
    x = 118,269,601,257.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.