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Finding the Fourth Proportional to 158,886.80, 219,265.08 and 87,267.68

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Solution

The fourth proportional to 158,886.80, 219,265.08 and 87,267.68 is: 120,430.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,886.80 : 219,265.08 = 87,267.68 : x
  2. Step 2: Convert to fraction form
    158,886.80/219,265.08 = 87,267.68/x
  3. Step 3: Cross multiply
    158,886.80x = 219,265.08 × 87,267.68
  4. Step 4: Simplify right side
    158,886.80x = 19,134,754,836.61
  5. Step 5: Solve for x
    x = 19,134,754,836.61/158,886.80
  6. Step 6: Final answer
    x = 120,430.11

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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.