Home / 109,439.90-164,159.85-108,748.70

Finding the Fourth Proportional to 109,439.90, 164,159.85 and 108,748.70

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Solution

The fourth proportional to 109,439.90, 164,159.85 and 108,748.70 is: 163,123.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,439.90 : 164,159.85 = 108,748.70 : x
  2. Step 2: Convert to fraction form
    109,439.90/164,159.85 = 108,748.70/x
  3. Step 3: Cross multiply
    109,439.90x = 164,159.85 × 108,748.70
  4. Step 4: Simplify right side
    109,439.90x = 17,852,170,279.70
  5. Step 5: Solve for x
    x = 17,852,170,279.70/109,439.90
  6. Step 6: Final answer
    x = 163,123.05

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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.