Home / 153,116.43-229,721.30-78,289.13

Finding the Fourth Proportional to 153,116.43, 229,721.30 and 78,289.13

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Solution

The fourth proportional to 153,116.43, 229,721.30 and 78,289.13 is: 117,457.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,116.43 : 229,721.30 = 78,289.13 : x
  2. Step 2: Convert to fraction form
    153,116.43/229,721.30 = 78,289.13/x
  3. Step 3: Cross multiply
    153,116.43x = 229,721.30 × 78,289.13
  4. Step 4: Simplify right side
    153,116.43x = 17,984,681,195.91
  5. Step 5: Solve for x
    x = 17,984,681,195.91/153,116.43
  6. Step 6: Final answer
    x = 117,457.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.