Home / 153,429.76-229,995.92-78,585.28

Finding the Fourth Proportional to 153,429.76, 229,995.92 and 78,585.28

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Solution

The fourth proportional to 153,429.76, 229,995.92 and 78,585.28 is: 117,801.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,429.76 : 229,995.92 = 78,585.28 : x
  2. Step 2: Convert to fraction form
    153,429.76/229,995.92 = 78,585.28/x
  3. Step 3: Cross multiply
    153,429.76x = 229,995.92 × 78,585.28
  4. Step 4: Simplify right side
    153,429.76x = 18,074,293,772.06
  5. Step 5: Solve for x
    x = 18,074,293,772.06/153,429.76
  6. Step 6: Final answer
    x = 117,801.75

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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.