Home / 130,437.87-179,961.12-90,137.13

Finding the Fourth Proportional to 130,437.87, 179,961.12 and 90,137.13

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Solution

The fourth proportional to 130,437.87, 179,961.12 and 90,137.13 is: 124,359.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,437.87 : 179,961.12 = 90,137.13 : x
  2. Step 2: Convert to fraction form
    130,437.87/179,961.12 = 90,137.13/x
  3. Step 3: Cross multiply
    130,437.87x = 179,961.12 × 90,137.13
  4. Step 4: Simplify right side
    130,437.87x = 16,221,178,868.39
  5. Step 5: Solve for x
    x = 16,221,178,868.39/130,437.87
  6. Step 6: Final answer
    x = 124,359.43

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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.