Home / 87,465.23-120,666.30-55,188.87

Finding the Fourth Proportional to 87,465.23, 120,666.30 and 55,188.87

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Solution

The fourth proportional to 87,465.23, 120,666.30 and 55,188.87 is: 76,138.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,465.23 : 120,666.30 = 55,188.87 : x
  2. Step 2: Convert to fraction form
    87,465.23/120,666.30 = 55,188.87/x
  3. Step 3: Cross multiply
    87,465.23x = 120,666.30 × 55,188.87
  4. Step 4: Simplify right side
    87,465.23x = 6,659,436,695.63
  5. Step 5: Solve for x
    x = 6,659,436,695.63/87,465.23
  6. Step 6: Final answer
    x = 76,138.10

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1.5x scale

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.