Home / 105,545.11-145,650.49-57,146.65

Finding the Fourth Proportional to 105,545.11, 145,650.49 and 57,146.65

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Solution

The fourth proportional to 105,545.11, 145,650.49 and 57,146.65 is: 78,861.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,545.11 : 145,650.49 = 57,146.65 : x
  2. Step 2: Convert to fraction form
    105,545.11/145,650.49 = 57,146.65/x
  3. Step 3: Cross multiply
    105,545.11x = 145,650.49 × 57,146.65
  4. Step 4: Simplify right side
    105,545.11x = 8,323,437,574.36
  5. Step 5: Solve for x
    x = 8,323,437,574.36/105,545.11
  6. Step 6: Final answer
    x = 78,861.42

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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.