Home / 137,312.15-205,990.43-42,520.05

Finding the Fourth Proportional to 137,312.15, 205,990.43 and 42,520.05

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Solution

The fourth proportional to 137,312.15, 205,990.43 and 42,520.05 is: 63,786.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,312.15 : 205,990.43 = 42,520.05 : x
  2. Step 2: Convert to fraction form
    137,312.15/205,990.43 = 42,520.05/x
  3. Step 3: Cross multiply
    137,312.15x = 205,990.43 × 42,520.05
  4. Step 4: Simplify right side
    137,312.15x = 8,758,723,170.52
  5. Step 5: Solve for x
    x = 8,758,723,170.52/137,312.15
  6. Step 6: Final answer
    x = 63,786.95

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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.