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Finding the Fourth Proportional to 158,081.44, 218,140.56 and 86,457.76

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Solution

The fourth proportional to 158,081.44, 218,140.56 and 86,457.76 is: 119,305.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,081.44 : 218,140.56 = 86,457.76 : x
  2. Step 2: Convert to fraction form
    158,081.44/218,140.56 = 86,457.76/x
  3. Step 3: Cross multiply
    158,081.44x = 218,140.56 × 86,457.76
  4. Step 4: Simplify right side
    158,081.44x = 18,859,944,182.75
  5. Step 5: Solve for x
    x = 18,859,944,182.75/158,081.44
  6. Step 6: Final answer
    x = 119,305.24

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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.