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Finding the Fourth Proportional to 157,353.40, 236,490.90 and 137,078.20

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Solution

The fourth proportional to 157,353.40, 236,490.90 and 137,078.20 is: 206,018.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,353.40 : 236,490.90 = 137,078.20 : x
  2. Step 2: Convert to fraction form
    157,353.40/236,490.90 = 137,078.20/x
  3. Step 3: Cross multiply
    157,353.40x = 236,490.90 × 137,078.20
  4. Step 4: Simplify right side
    157,353.40x = 32,417,746,888.38
  5. Step 5: Solve for x
    x = 32,417,746,888.38/157,353.40
  6. Step 6: Final answer
    x = 206,018.73

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1.5x scale

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.