Home / 117,869,962.13-162,727,970.21-78,231,246.87

Finding the Fourth Proportional to 117,869,962.13, 162,727,970.21 and 78,231,246.87

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Solution

The fourth proportional to 117,869,962.13, 162,727,970.21 and 78,231,246.87 is: 108,003,869.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,869,962.13 : 162,727,970.21 = 78,231,246.87 : x
  2. Step 2: Convert to fraction form
    117,869,962.13/162,727,970.21 = 78,231,246.87/x
  3. Step 3: Cross multiply
    117,869,962.13x = 162,727,970.21 × 78,231,246.87
  4. Step 4: Simplify right side
    117,869,962.13x = 12,730,412,010,348,096
  5. Step 5: Solve for x
    x = 12,730,412,010,348,096/117,869,962.13
  6. Step 6: Final answer
    x = 108,003,869.53

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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.