Home / 185,239.65-255,631.15-100,356.72

Finding the Fourth Proportional to 185,239.65, 255,631.15 and 100,356.72

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Solution

The fourth proportional to 185,239.65, 255,631.15 and 100,356.72 is: 138,492.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,239.65 : 255,631.15 = 100,356.72 : x
  2. Step 2: Convert to fraction form
    185,239.65/255,631.15 = 100,356.72/x
  3. Step 3: Cross multiply
    185,239.65x = 255,631.15 × 100,356.72
  4. Step 4: Simplify right side
    185,239.65x = 25,654,303,743.83
  5. Step 5: Solve for x
    x = 25,654,303,743.83/185,239.65
  6. Step 6: Final answer
    x = 138,492.51

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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.