Home / 157,439.86-235,156.40-142,423.88

Finding the Fourth Proportional to 157,439.86, 235,156.40 and 142,423.88

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Solution

The fourth proportional to 157,439.86, 235,156.40 and 142,423.88 is: 212,728.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,439.86 : 235,156.40 = 142,423.88 : x
  2. Step 2: Convert to fraction form
    157,439.86/235,156.40 = 142,423.88/x
  3. Step 3: Cross multiply
    157,439.86x = 235,156.40 × 142,423.88
  4. Step 4: Simplify right side
    157,439.86x = 33,491,886,894.83
  5. Step 5: Solve for x
    x = 33,491,886,894.83/157,439.86
  6. Step 6: Final answer
    x = 212,728.13

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.