Home / 148,705.50-205,217.91-81,641.82

Finding the Fourth Proportional to 148,705.50, 205,217.91 and 81,641.82

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Solution

The fourth proportional to 148,705.50, 205,217.91 and 81,641.82 is: 112,668.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,705.50 : 205,217.91 = 81,641.82 : x
  2. Step 2: Convert to fraction form
    148,705.50/205,217.91 = 81,641.82/x
  3. Step 3: Cross multiply
    148,705.50x = 205,217.91 × 81,641.82
  4. Step 4: Simplify right side
    148,705.50x = 16,754,363,669.00
  5. Step 5: Solve for x
    x = 16,754,363,669.00/148,705.50
  6. Step 6: Final answer
    x = 112,668.08

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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.