Home / 225,209.16-310,741.92-129,690.72

Finding the Fourth Proportional to 225,209.16, 310,741.92 and 129,690.72

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Solution

The fourth proportional to 225,209.16, 310,741.92 and 129,690.72 is: 178,946.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,209.16 : 310,741.92 = 129,690.72 : x
  2. Step 2: Convert to fraction form
    225,209.16/310,741.92 = 129,690.72/x
  3. Step 3: Cross multiply
    225,209.16x = 310,741.92 × 129,690.72
  4. Step 4: Simplify right side
    225,209.16x = 40,300,343,338.98
  5. Step 5: Solve for x
    x = 40,300,343,338.98/225,209.16
  6. Step 6: Final answer
    x = 178,946.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.