Home / 112,545.16-155,238.96-72,195

Finding the Fourth Proportional to 112,545.16, 155,238.96 and 72,195

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Solution

The fourth proportional to 112,545.16, 155,238.96 and 72,195 is: 99,582.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,545.16 : 155,238.96 = 72,195 : x
  2. Step 2: Convert to fraction form
    112,545.16/155,238.96 = 72,195/x
  3. Step 3: Cross multiply
    112,545.16x = 155,238.96 × 72,195
  4. Step 4: Simplify right side
    112,545.16x = 11,207,476,717.20
  5. Step 5: Solve for x
    x = 11,207,476,717.20/112,545.16
  6. Step 6: Final answer
    x = 99,582.04

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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.