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Finding the Fourth Proportional to 158,371.28, 218,552.40 and 86,752.64

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Solution

The fourth proportional to 158,371.28, 218,552.40 and 86,752.64 is: 119,718.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,371.28 : 218,552.40 = 86,752.64 : x
  2. Step 2: Convert to fraction form
    158,371.28/218,552.40 = 86,752.64/x
  3. Step 3: Cross multiply
    158,371.28x = 218,552.40 × 86,752.64
  4. Step 4: Simplify right side
    158,371.28x = 18,959,997,678.34
  5. Step 5: Solve for x
    x = 18,959,997,678.34/158,371.28
  6. Step 6: Final answer
    x = 119,718.66

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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.