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Finding the Fourth Proportional to 142,750.10, 214,125.15 and 42,925.70

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Solution

The fourth proportional to 142,750.10, 214,125.15 and 42,925.70 is: 64,388.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,750.10 : 214,125.15 = 42,925.70 : x
  2. Step 2: Convert to fraction form
    142,750.10/214,125.15 = 42,925.70/x
  3. Step 3: Cross multiply
    142,750.10x = 214,125.15 × 42,925.70
  4. Step 4: Simplify right side
    142,750.10x = 9,191,471,951.36
  5. Step 5: Solve for x
    x = 9,191,471,951.36/142,750.10
  6. Step 6: Final answer
    x = 64,388.55

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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.