Home / 155,545.45-233,217.73-85,405.93

Finding the Fourth Proportional to 155,545.45, 233,217.73 and 85,405.93

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Solution

The fourth proportional to 155,545.45, 233,217.73 and 85,405.93 is: 128,053.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,545.45 : 233,217.73 = 85,405.93 : x
  2. Step 2: Convert to fraction form
    155,545.45/233,217.73 = 85,405.93/x
  3. Step 3: Cross multiply
    155,545.45x = 233,217.73 × 85,405.93
  4. Step 4: Simplify right side
    155,545.45x = 19,918,177,123.14
  5. Step 5: Solve for x
    x = 19,918,177,123.14/155,545.45
  6. Step 6: Final answer
    x = 128,053.74

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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.