Home / 128,180.04-176,873.22-77,191.95

Finding the Fourth Proportional to 128,180.04, 176,873.22 and 77,191.95

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Solution

The fourth proportional to 128,180.04, 176,873.22 and 77,191.95 is: 106,515.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,180.04 : 176,873.22 = 77,191.95 : x
  2. Step 2: Convert to fraction form
    128,180.04/176,873.22 = 77,191.95/x
  3. Step 3: Cross multiply
    128,180.04x = 176,873.22 × 77,191.95
  4. Step 4: Simplify right side
    128,180.04x = 13,653,188,754.58
  5. Step 5: Solve for x
    x = 13,653,188,754.58/128,180.04
  6. Step 6: Final answer
    x = 106,515.72

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1.5x scale

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.