Home / 126,278.40-174,263.04-69,690.72

Finding the Fourth Proportional to 126,278.40, 174,263.04 and 69,690.72

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Solution

The fourth proportional to 126,278.40, 174,263.04 and 69,690.72 is: 96,172.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,278.40 : 174,263.04 = 69,690.72 : x
  2. Step 2: Convert to fraction form
    126,278.40/174,263.04 = 69,690.72/x
  3. Step 3: Cross multiply
    126,278.40x = 174,263.04 × 69,690.72
  4. Step 4: Simplify right side
    126,278.40x = 12,144,516,726.99
  5. Step 5: Solve for x
    x = 12,144,516,726.99/126,278.40
  6. Step 6: Final answer
    x = 96,172.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.