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Finding the Fourth Proportional to 158,304, 218,459.52 and 91,240.32

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Solution

The fourth proportional to 158,304, 218,459.52 and 91,240.32 is: 125,911.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,304 : 218,459.52 = 91,240.32 : x
  2. Step 2: Convert to fraction form
    158,304/218,459.52 = 91,240.32/x
  3. Step 3: Cross multiply
    158,304x = 218,459.52 × 91,240.32
  4. Step 4: Simplify right side
    158,304x = 19,932,316,511.85
  5. Step 5: Solve for x
    x = 19,932,316,511.85/158,304
  6. Step 6: Final answer
    x = 125,911.64

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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.