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Finding the Fourth Proportional to 147,149.60, 203,060.32 and 83,490.89

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Solution

The fourth proportional to 147,149.60, 203,060.32 and 83,490.89 is: 115,213.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,149.60 : 203,060.32 = 83,490.89 : x
  2. Step 2: Convert to fraction form
    147,149.60/203,060.32 = 83,490.89/x
  3. Step 3: Cross multiply
    147,149.60x = 203,060.32 × 83,490.89
  4. Step 4: Simplify right side
    147,149.60x = 16,953,685,616.46
  5. Step 5: Solve for x
    x = 16,953,685,616.46/147,149.60
  6. Step 6: Final answer
    x = 115,213.95

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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.