Home / 121,416.60-182,124.90-79,426.20

Finding the Fourth Proportional to 121,416.60, 182,124.90 and 79,426.20

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Solution

The fourth proportional to 121,416.60, 182,124.90 and 79,426.20 is: 119,139.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,416.60 : 182,124.90 = 79,426.20 : x
  2. Step 2: Convert to fraction form
    121,416.60/182,124.90 = 79,426.20/x
  3. Step 3: Cross multiply
    121,416.60x = 182,124.90 × 79,426.20
  4. Step 4: Simplify right side
    121,416.60x = 14,465,488,732.38
  5. Step 5: Solve for x
    x = 14,465,488,732.38/121,416.60
  6. Step 6: Final answer
    x = 119,139.30

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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.