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Finding the Fourth Proportional to 147,266.40, 220,640.40 and 126,530.40

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Solution

The fourth proportional to 147,266.40, 220,640.40 and 126,530.40 is: 189,572.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,266.40 : 220,640.40 = 126,530.40 : x
  2. Step 2: Convert to fraction form
    147,266.40/220,640.40 = 126,530.40/x
  3. Step 3: Cross multiply
    147,266.40x = 220,640.40 × 126,530.40
  4. Step 4: Simplify right side
    147,266.40x = 27,917,718,068.16
  5. Step 5: Solve for x
    x = 27,917,718,068.16/147,266.40
  6. Step 6: Final answer
    x = 189,572.90

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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.