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Finding the Fourth Proportional to 157,463.20, 236,123.72 and 45,117.72

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Solution

The fourth proportional to 157,463.20, 236,123.72 and 45,117.72 is: 67,656.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,463.20 : 236,123.72 = 45,117.72 : x
  2. Step 2: Convert to fraction form
    157,463.20/236,123.72 = 45,117.72/x
  3. Step 3: Cross multiply
    157,463.20x = 236,123.72 × 45,117.72
  4. Step 4: Simplify right side
    157,463.20x = 10,653,362,478.11
  5. Step 5: Solve for x
    x = 10,653,362,478.11/157,463.20
  6. Step 6: Final answer
    x = 67,656.20

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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.