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Finding the Fourth Proportional to 158,248.49, 218,382.90 and 86,628.56

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Solution

The fourth proportional to 158,248.49, 218,382.90 and 86,628.56 is: 119,547.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,248.49 : 218,382.90 = 86,628.56 : x
  2. Step 2: Convert to fraction form
    158,248.49/218,382.90 = 86,628.56/x
  3. Step 3: Cross multiply
    158,248.49x = 218,382.90 × 86,628.56
  4. Step 4: Simplify right side
    158,248.49x = 18,918,196,155.62
  5. Step 5: Solve for x
    x = 18,918,196,155.62/158,248.49
  6. Step 6: Final answer
    x = 119,547.40

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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.