Home / 121,520.70-182,281.05-77,003.10

Finding the Fourth Proportional to 121,520.70, 182,281.05 and 77,003.10

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Solution

The fourth proportional to 121,520.70, 182,281.05 and 77,003.10 is: 115,504.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,520.70 : 182,281.05 = 77,003.10 : x
  2. Step 2: Convert to fraction form
    121,520.70/182,281.05 = 77,003.10/x
  3. Step 3: Cross multiply
    121,520.70x = 182,281.05 × 77,003.10
  4. Step 4: Simplify right side
    121,520.70x = 14,036,205,921.26
  5. Step 5: Solve for x
    x = 14,036,205,921.26/121,520.70
  6. Step 6: Final answer
    x = 115,504.65

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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.