Home / 189,943.12-284,979.71-71,648.29

Finding the Fourth Proportional to 189,943.12, 284,979.71 and 71,648.29

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Solution

The fourth proportional to 189,943.12, 284,979.71 and 71,648.29 is: 107,496.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,943.12 : 284,979.71 = 71,648.29 : x
  2. Step 2: Convert to fraction form
    189,943.12/284,979.71 = 71,648.29/x
  3. Step 3: Cross multiply
    189,943.12x = 284,979.71 × 71,648.29
  4. Step 4: Simplify right side
    189,943.12x = 20,418,308,547.95
  5. Step 5: Solve for x
    x = 20,418,308,547.95/189,943.12
  6. Step 6: Final answer
    x = 107,496.96

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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.