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Finding the Fourth Proportional to 104,749.32, 157,123.98 and 86,242.44

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Solution

The fourth proportional to 104,749.32, 157,123.98 and 86,242.44 is: 129,363.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,749.32 : 157,123.98 = 86,242.44 : x
  2. Step 2: Convert to fraction form
    104,749.32/157,123.98 = 86,242.44/x
  3. Step 3: Cross multiply
    104,749.32x = 157,123.98 × 86,242.44
  4. Step 4: Simplify right side
    104,749.32x = 13,550,755,417.71
  5. Step 5: Solve for x
    x = 13,550,755,417.71/104,749.32
  6. Step 6: Final answer
    x = 129,363.66

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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.