Home / 189,619.20-284,659.20-142,502.40

Finding the Fourth Proportional to 189,619.20, 284,659.20 and 142,502.40

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Solution

The fourth proportional to 189,619.20, 284,659.20 and 142,502.40 is: 213,926.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,619.20 : 284,659.20 = 142,502.40 : x
  2. Step 2: Convert to fraction form
    189,619.20/284,659.20 = 142,502.40/x
  3. Step 3: Cross multiply
    189,619.20x = 284,659.20 × 142,502.40
  4. Step 4: Simplify right side
    189,619.20x = 40,564,619,182.08
  5. Step 5: Solve for x
    x = 40,564,619,182.08/189,619.20
  6. Step 6: Final answer
    x = 213,926.75

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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.