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Finding the Fourth Proportional to 115,502.54, 159,396.10 and 67,790.30

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Solution

The fourth proportional to 115,502.54, 159,396.10 and 67,790.30 is: 93,552.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,502.54 : 159,396.10 = 67,790.30 : x
  2. Step 2: Convert to fraction form
    115,502.54/159,396.10 = 67,790.30/x
  3. Step 3: Cross multiply
    115,502.54x = 159,396.10 × 67,790.30
  4. Step 4: Simplify right side
    115,502.54x = 10,805,509,437.83
  5. Step 5: Solve for x
    x = 10,805,509,437.83/115,502.54
  6. Step 6: Final answer
    x = 93,552.14

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1.5x scale

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.