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Finding the Fourth Proportional to 87,305.44, 130,223.72 and 84,681.76

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Solution

The fourth proportional to 87,305.44, 130,223.72 and 84,681.76 is: 126,310.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,305.44 : 130,223.72 = 84,681.76 : x
  2. Step 2: Convert to fraction form
    87,305.44/130,223.72 = 84,681.76/x
  3. Step 3: Cross multiply
    87,305.44x = 130,223.72 × 84,681.76
  4. Step 4: Simplify right side
    87,305.44x = 11,027,573,803.35
  5. Step 5: Solve for x
    x = 11,027,573,803.35/87,305.44
  6. Step 6: Final answer
    x = 126,310.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.