Home / 121,761.69-182,642.58-79,677.18

Finding the Fourth Proportional to 121,761.69, 182,642.58 and 79,677.18

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Solution

The fourth proportional to 121,761.69, 182,642.58 and 79,677.18 is: 119,515.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,761.69 : 182,642.58 = 79,677.18 : x
  2. Step 2: Convert to fraction form
    121,761.69/182,642.58 = 79,677.18/x
  3. Step 3: Cross multiply
    121,761.69x = 182,642.58 × 79,677.18
  4. Step 4: Simplify right side
    121,761.69x = 14,552,445,722.32
  5. Step 5: Solve for x
    x = 14,552,445,722.32/121,761.69
  6. Step 6: Final answer
    x = 119,515.80

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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.