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Finding the Fourth Proportional to 157,695.40, 236,470.20 and 68,903.20

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Solution

The fourth proportional to 157,695.40, 236,470.20 and 68,903.20 is: 103,322.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,695.40 : 236,470.20 = 68,903.20 : x
  2. Step 2: Convert to fraction form
    157,695.40/236,470.20 = 68,903.20/x
  3. Step 3: Cross multiply
    157,695.40x = 236,470.20 × 68,903.20
  4. Step 4: Simplify right side
    157,695.40x = 16,293,553,484.64
  5. Step 5: Solve for x
    x = 16,293,553,484.64/157,695.40
  6. Step 6: Final answer
    x = 103,322.95

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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.