Home / 120,639.68-181,019.88-54,127.34

Finding the Fourth Proportional to 120,639.68, 181,019.88 and 54,127.34

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Solution

The fourth proportional to 120,639.68, 181,019.88 and 54,127.34 is: 81,218.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,639.68 : 181,019.88 = 54,127.34 : x
  2. Step 2: Convert to fraction form
    120,639.68/181,019.88 = 54,127.34/x
  3. Step 3: Cross multiply
    120,639.68x = 181,019.88 × 54,127.34
  4. Step 4: Simplify right side
    120,639.68x = 9,798,124,591.52
  5. Step 5: Solve for x
    x = 9,798,124,591.52/120,639.68
  6. Step 6: Final answer
    x = 81,218.09

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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.