Home / 153,983,531.81-212,444,960.86-87,856,525.01

Finding the Fourth Proportional to 153,983,531.81, 212,444,960.86 and 87,856,525.01

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Solution

The fourth proportional to 153,983,531.81, 212,444,960.86 and 87,856,525.01 is: 121,212,156.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,983,531.81 : 212,444,960.86 = 87,856,525.01 : x
  2. Step 2: Convert to fraction form
    153,983,531.81/212,444,960.86 = 87,856,525.01/x
  3. Step 3: Cross multiply
    153,983,531.81x = 212,444,960.86 × 87,856,525.01
  4. Step 4: Simplify right side
    153,983,531.81x = 18,664,676,017,686,872
  5. Step 5: Solve for x
    x = 18,664,676,017,686,872/153,983,531.81
  6. Step 6: Final answer
    x = 121,212,156.90

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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.