Home / 189,922-284,777.84-77,681.04

Finding the Fourth Proportional to 189,922, 284,777.84 and 77,681.04

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Solution

The fourth proportional to 189,922, 284,777.84 and 77,681.04 is: 116,478.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,922 : 284,777.84 = 77,681.04 : x
  2. Step 2: Convert to fraction form
    189,922/284,777.84 = 77,681.04/x
  3. Step 3: Cross multiply
    189,922x = 284,777.84 × 77,681.04
  4. Step 4: Simplify right side
    189,922x = 22,121,838,780.15
  5. Step 5: Solve for x
    x = 22,121,838,780.15/189,922
  6. Step 6: Final answer
    x = 116,478.55

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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.