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Finding the Fourth Proportional to 156,873.70, 235,310.55 and 83,145.70

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Solution

The fourth proportional to 156,873.70, 235,310.55 and 83,145.70 is: 124,718.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,873.70 : 235,310.55 = 83,145.70 : x
  2. Step 2: Convert to fraction form
    156,873.70/235,310.55 = 83,145.70/x
  3. Step 3: Cross multiply
    156,873.70x = 235,310.55 × 83,145.70
  4. Step 4: Simplify right side
    156,873.70x = 19,565,060,397.14
  5. Step 5: Solve for x
    x = 19,565,060,397.14/156,873.70
  6. Step 6: Final answer
    x = 124,718.55

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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.