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Finding the Fourth Proportional to 111,502.50, 153,853.60 and 63,104.20

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Solution

The fourth proportional to 111,502.50, 153,853.60 and 63,104.20 is: 87,072.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,502.50 : 153,853.60 = 63,104.20 : x
  2. Step 2: Convert to fraction form
    111,502.50/153,853.60 = 63,104.20/x
  3. Step 3: Cross multiply
    111,502.50x = 153,853.60 × 63,104.20
  4. Step 4: Simplify right side
    111,502.50x = 9,708,808,345.12
  5. Step 5: Solve for x
    x = 9,708,808,345.12/111,502.50
  6. Step 6: Final answer
    x = 87,072.56

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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.