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Finding the Fourth Proportional to 108,030.20, 161,753.70 and 84,702.20

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Solution

The fourth proportional to 108,030.20, 161,753.70 and 84,702.20 is: 126,824.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,030.20 : 161,753.70 = 84,702.20 : x
  2. Step 2: Convert to fraction form
    108,030.20/161,753.70 = 84,702.20/x
  3. Step 3: Cross multiply
    108,030.20x = 161,753.70 × 84,702.20
  4. Step 4: Simplify right side
    108,030.20x = 13,700,894,248.14
  5. Step 5: Solve for x
    x = 13,700,894,248.14/108,030.20
  6. Step 6: Final answer
    x = 126,824.67

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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.