Home / 106,208.30-159,312.45-87,545.90

Finding the Fourth Proportional to 106,208.30, 159,312.45 and 87,545.90

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Solution

The fourth proportional to 106,208.30, 159,312.45 and 87,545.90 is: 131,318.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,208.30 : 159,312.45 = 87,545.90 : x
  2. Step 2: Convert to fraction form
    106,208.30/159,312.45 = 87,545.90/x
  3. Step 3: Cross multiply
    106,208.30x = 159,312.45 × 87,545.90
  4. Step 4: Simplify right side
    106,208.30x = 13,947,151,816.46
  5. Step 5: Solve for x
    x = 13,947,151,816.46/106,208.30
  6. Step 6: Final answer
    x = 131,318.85

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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.