Home / 189,922.17-284,778.08-77,681.20

Finding the Fourth Proportional to 189,922.17, 284,778.08 and 77,681.20

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Solution

The fourth proportional to 189,922.17, 284,778.08 and 77,681.20 is: 116,478.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,922.17 : 284,778.08 = 77,681.20 : x
  2. Step 2: Convert to fraction form
    189,922.17/284,778.08 = 77,681.20/x
  3. Step 3: Cross multiply
    189,922.17x = 284,778.08 × 77,681.20
  4. Step 4: Simplify right side
    189,922.17x = 22,121,903,513.95
  5. Step 5: Solve for x
    x = 22,121,903,513.95/189,922.17
  6. Step 6: Final answer
    x = 116,478.79

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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.