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Finding the Fourth Proportional to 157,490.40, 236,235.60 and 137,807.40

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Solution

The fourth proportional to 157,490.40, 236,235.60 and 137,807.40 is: 206,711.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,490.40 : 236,235.60 = 137,807.40 : x
  2. Step 2: Convert to fraction form
    157,490.40/236,235.60 = 137,807.40/x
  3. Step 3: Cross multiply
    157,490.40x = 236,235.60 × 137,807.40
  4. Step 4: Simplify right side
    157,490.40x = 32,555,013,823.44
  5. Step 5: Solve for x
    x = 32,555,013,823.44/157,490.40
  6. Step 6: Final answer
    x = 206,711.10

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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.