Home / 156,771,782.88-216,345,900.93-86,211,942.12

Finding the Fourth Proportional to 156,771,782.88, 216,345,900.93 and 86,211,942.12

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Solution

The fourth proportional to 156,771,782.88, 216,345,900.93 and 86,211,942.12 is: 118,972,942.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,771,782.88 : 216,345,900.93 = 86,211,942.12 : x
  2. Step 2: Convert to fraction form
    156,771,782.88/216,345,900.93 = 86,211,942.12/x
  3. Step 3: Cross multiply
    156,771,782.88x = 216,345,900.93 × 86,211,942.12
  4. Step 4: Simplify right side
    156,771,782.88x = 18,651,600,288,876,416
  5. Step 5: Solve for x
    x = 18,651,600,288,876,416/156,771,782.88
  6. Step 6: Final answer
    x = 118,972,942.36

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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.