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Finding the Fourth Proportional to 156,875.70, 235,313.55 and 83,147.70

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Solution

The fourth proportional to 156,875.70, 235,313.55 and 83,147.70 is: 124,721.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,875.70 : 235,313.55 = 83,147.70 : x
  2. Step 2: Convert to fraction form
    156,875.70/235,313.55 = 83,147.70/x
  3. Step 3: Cross multiply
    156,875.70x = 235,313.55 × 83,147.70
  4. Step 4: Simplify right side
    156,875.70x = 19,565,780,461.34
  5. Step 5: Solve for x
    x = 19,565,780,461.34/156,875.70
  6. Step 6: Final answer
    x = 124,721.55

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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.