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Finding the Fourth Proportional to 157,875.76, 236,807.16 and 87,710.32

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Solution

The fourth proportional to 157,875.76, 236,807.16 and 87,710.32 is: 131,561.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,875.76 : 236,807.16 = 87,710.32 : x
  2. Step 2: Convert to fraction form
    157,875.76/236,807.16 = 87,710.32/x
  3. Step 3: Cross multiply
    157,875.76x = 236,807.16 × 87,710.32
  4. Step 4: Simplify right side
    157,875.76x = 20,770,431,781.89
  5. Step 5: Solve for x
    x = 20,770,431,781.89/157,875.76
  6. Step 6: Final answer
    x = 131,561.88

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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.