Home / 116,928,721-161,195,287.23-79,711,240.74

Finding the Fourth Proportional to 116,928,721, 161,195,287.23 and 79,711,240.74

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Solution

The fourth proportional to 116,928,721, 161,195,287.23 and 79,711,240.74 is: 109,888,111.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,928,721 : 161,195,287.23 = 79,711,240.74 : x
  2. Step 2: Convert to fraction form
    116,928,721/161,195,287.23 = 79,711,240.74/x
  3. Step 3: Cross multiply
    116,928,721x = 161,195,287.23 × 79,711,240.74
  4. Step 4: Simplify right side
    116,928,721x = 12,849,076,346,543,976
  5. Step 5: Solve for x
    x = 12,849,076,346,543,976/116,928,721
  6. Step 6: Final answer
    x = 109,888,111.63

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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.