Home / 125,037.60-187,642.80-90,007.20

Finding the Fourth Proportional to 125,037.60, 187,642.80 and 90,007.20

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Solution

The fourth proportional to 125,037.60, 187,642.80 and 90,007.20 is: 135,072.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,037.60 : 187,642.80 = 90,007.20 : x
  2. Step 2: Convert to fraction form
    125,037.60/187,642.80 = 90,007.20/x
  3. Step 3: Cross multiply
    125,037.60x = 187,642.80 × 90,007.20
  4. Step 4: Simplify right side
    125,037.60x = 16,889,203,028.16
  5. Step 5: Solve for x
    x = 16,889,203,028.16/125,037.60
  6. Step 6: Final answer
    x = 135,072.99

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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.