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Finding the Fourth Proportional to 158,332, 218,493.22 and 86,710.16

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Solution

The fourth proportional to 158,332, 218,493.22 and 86,710.16 is: 119,657.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,332 : 218,493.22 = 86,710.16 : x
  2. Step 2: Convert to fraction form
    158,332/218,493.22 = 86,710.16/x
  3. Step 3: Cross multiply
    158,332x = 218,493.22 × 86,710.16
  4. Step 4: Simplify right side
    158,332x = 18,945,582,065.12
  5. Step 5: Solve for x
    x = 18,945,582,065.12/158,332
  6. Step 6: Final answer
    x = 119,657.32

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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.