Home / 213,020.10-319,275.96-99,013.86

Finding the Fourth Proportional to 213,020.10, 319,275.96 and 99,013.86

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Solution

The fourth proportional to 213,020.10, 319,275.96 and 99,013.86 is: 148,402.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,020.10 : 319,275.96 = 99,013.86 : x
  2. Step 2: Convert to fraction form
    213,020.10/319,275.96 = 99,013.86/x
  3. Step 3: Cross multiply
    213,020.10x = 319,275.96 × 99,013.86
  4. Step 4: Simplify right side
    213,020.10x = 31,612,745,204.81
  5. Step 5: Solve for x
    x = 31,612,745,204.81/213,020.10
  6. Step 6: Final answer
    x = 148,402.64

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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.