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Finding the Fourth Proportional to 108,430.38, 149,620.50 and 60,671.70

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Solution

The fourth proportional to 108,430.38, 149,620.50 and 60,671.70 is: 83,719.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,430.38 : 149,620.50 = 60,671.70 : x
  2. Step 2: Convert to fraction form
    108,430.38/149,620.50 = 60,671.70/x
  3. Step 3: Cross multiply
    108,430.38x = 149,620.50 × 60,671.70
  4. Step 4: Simplify right side
    108,430.38x = 9,077,730,089.85
  5. Step 5: Solve for x
    x = 9,077,730,089.85/108,430.38
  6. Step 6: Final answer
    x = 83,719.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.