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Finding the Fourth Proportional to 158,920.98, 219,300.12 and 87,304.02

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Solution

The fourth proportional to 158,920.98, 219,300.12 and 87,304.02 is: 120,473.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,920.98 : 219,300.12 = 87,304.02 : x
  2. Step 2: Convert to fraction form
    158,920.98/219,300.12 = 87,304.02/x
  3. Step 3: Cross multiply
    158,920.98x = 219,300.12 × 87,304.02
  4. Step 4: Simplify right side
    158,920.98x = 19,145,782,062.48
  5. Step 5: Solve for x
    x = 19,145,782,062.48/158,920.98
  6. Step 6: Final answer
    x = 120,473.60

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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.