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Finding the Fourth Proportional to 109,251.70, 163,877.55 and 86,701.30

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Solution

The fourth proportional to 109,251.70, 163,877.55 and 86,701.30 is: 130,051.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,251.70 : 163,877.55 = 86,701.30 : x
  2. Step 2: Convert to fraction form
    109,251.70/163,877.55 = 86,701.30/x
  3. Step 3: Cross multiply
    109,251.70x = 163,877.55 × 86,701.30
  4. Step 4: Simplify right side
    109,251.70x = 14,208,396,625.82
  5. Step 5: Solve for x
    x = 14,208,396,625.82/109,251.70
  6. Step 6: Final answer
    x = 130,051.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.