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Finding the Fourth Proportional to 98,309.73, 147,440.17 and 42,143.48

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Solution

The fourth proportional to 98,309.73, 147,440.17 and 42,143.48 is: 63,204.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,309.73 : 147,440.17 = 42,143.48 : x
  2. Step 2: Convert to fraction form
    98,309.73/147,440.17 = 42,143.48/x
  3. Step 3: Cross multiply
    98,309.73x = 147,440.17 × 42,143.48
  4. Step 4: Simplify right side
    98,309.73x = 6,213,641,013.03
  5. Step 5: Solve for x
    x = 6,213,641,013.03/98,309.73
  6. Step 6: Final answer
    x = 63,204.74

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1.5x scale

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.