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Finding the Fourth Proportional to 158,167.31, 218,270.88 and 86,547.34

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Solution

The fourth proportional to 158,167.31, 218,270.88 and 86,547.34 is: 119,435.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,167.31 : 218,270.88 = 86,547.34 : x
  2. Step 2: Convert to fraction form
    158,167.31/218,270.88 = 86,547.34/x
  3. Step 3: Cross multiply
    158,167.31x = 218,270.88 × 86,547.34
  4. Step 4: Simplify right side
    158,167.31x = 18,890,762,972.10
  5. Step 5: Solve for x
    x = 18,890,762,972.10/158,167.31
  6. Step 6: Final answer
    x = 119,435.32

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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.