Home / 87,686.40-131,529.60-70,190.40

Finding the Fourth Proportional to 87,686.40, 131,529.60 and 70,190.40

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Solution

The fourth proportional to 87,686.40, 131,529.60 and 70,190.40 is: 105,285.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,686.40 : 131,529.60 = 70,190.40 : x
  2. Step 2: Convert to fraction form
    87,686.40/131,529.60 = 70,190.40/x
  3. Step 3: Cross multiply
    87,686.40x = 131,529.60 × 70,190.40
  4. Step 4: Simplify right side
    87,686.40x = 9,232,115,235.84
  5. Step 5: Solve for x
    x = 9,232,115,235.84/87,686.40
  6. Step 6: Final answer
    x = 105,285.60

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1.5x scale

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.