Home / 88,288.50-131,601.05-81,202.62

Finding the Fourth Proportional to 88,288.50, 131,601.05 and 81,202.62

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Solution

The fourth proportional to 88,288.50, 131,601.05 and 81,202.62 is: 121,038.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,288.50 : 131,601.05 = 81,202.62 : x
  2. Step 2: Convert to fraction form
    88,288.50/131,601.05 = 81,202.62/x
  3. Step 3: Cross multiply
    88,288.50x = 131,601.05 × 81,202.62
  4. Step 4: Simplify right side
    88,288.50x = 10,686,350,142.24
  5. Step 5: Solve for x
    x = 10,686,350,142.24/88,288.50
  6. Step 6: Final answer
    x = 121,038.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.