Home / 128,097.18-176,780.07-112,154.22

Finding the Fourth Proportional to 128,097.18, 176,780.07 and 112,154.22

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Solution

The fourth proportional to 128,097.18, 176,780.07 and 112,154.22 is: 154,778.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,097.18 : 176,780.07 = 112,154.22 : x
  2. Step 2: Convert to fraction form
    128,097.18/176,780.07 = 112,154.22/x
  3. Step 3: Cross multiply
    128,097.18x = 176,780.07 × 112,154.22
  4. Step 4: Simplify right side
    128,097.18x = 19,826,630,862.40
  5. Step 5: Solve for x
    x = 19,826,630,862.40/128,097.18
  6. Step 6: Final answer
    x = 154,778.04

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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.