Home / 129,426.60-194,139.90-102,988.20

Finding the Fourth Proportional to 129,426.60, 194,139.90 and 102,988.20

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Solution

The fourth proportional to 129,426.60, 194,139.90 and 102,988.20 is: 154,482.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,426.60 : 194,139.90 = 102,988.20 : x
  2. Step 2: Convert to fraction form
    129,426.60/194,139.90 = 102,988.20/x
  3. Step 3: Cross multiply
    129,426.60x = 194,139.90 × 102,988.20
  4. Step 4: Simplify right side
    129,426.60x = 19,994,118,849.18
  5. Step 5: Solve for x
    x = 19,994,118,849.18/129,426.60
  6. Step 6: Final answer
    x = 154,482.30

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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.