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Finding the Fourth Proportional to 158,108.74, 218,187.20 and 86,488.14

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Solution

The fourth proportional to 158,108.74, 218,187.20 and 86,488.14 is: 119,352.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,108.74 : 218,187.20 = 86,488.14 : x
  2. Step 2: Convert to fraction form
    158,108.74/218,187.20 = 86,488.14/x
  3. Step 3: Cross multiply
    158,108.74x = 218,187.20 × 86,488.14
  4. Step 4: Simplify right side
    158,108.74x = 18,870,605,099.81
  5. Step 5: Solve for x
    x = 18,870,605,099.81/158,108.74
  6. Step 6: Final answer
    x = 119,352.07

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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.