Home / 125,039.10-187,645.05-90,008.70

Finding the Fourth Proportional to 125,039.10, 187,645.05 and 90,008.70

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Solution

The fourth proportional to 125,039.10, 187,645.05 and 90,008.70 is: 135,075.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,039.10 : 187,645.05 = 90,008.70 : x
  2. Step 2: Convert to fraction form
    125,039.10/187,645.05 = 90,008.70/x
  3. Step 3: Cross multiply
    125,039.10x = 187,645.05 × 90,008.70
  4. Step 4: Simplify right side
    125,039.10x = 16,889,687,011.94
  5. Step 5: Solve for x
    x = 16,889,687,011.94/125,039.10
  6. Step 6: Final answer
    x = 135,075.24

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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.