Home / 143,841.68-198,496.95-90,155.69

Finding the Fourth Proportional to 143,841.68, 198,496.95 and 90,155.69

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Solution

The fourth proportional to 143,841.68, 198,496.95 and 90,155.69 is: 124,411.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,841.68 : 198,496.95 = 90,155.69 : x
  2. Step 2: Convert to fraction form
    143,841.68/198,496.95 = 90,155.69/x
  3. Step 3: Cross multiply
    143,841.68x = 198,496.95 × 90,155.69
  4. Step 4: Simplify right side
    143,841.68x = 17,895,629,490.15
  5. Step 5: Solve for x
    x = 17,895,629,490.15/143,841.68
  6. Step 6: Final answer
    x = 124,411.99

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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.