Home / 171,487.07-256,769.80-139,767.11

Finding the Fourth Proportional to 171,487.07, 256,769.80 and 139,767.11

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Solution

The fourth proportional to 171,487.07, 256,769.80 and 139,767.11 is: 209,275.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,487.07 : 256,769.80 = 139,767.11 : x
  2. Step 2: Convert to fraction form
    171,487.07/256,769.80 = 139,767.11/x
  3. Step 3: Cross multiply
    171,487.07x = 256,769.80 × 139,767.11
  4. Step 4: Simplify right side
    171,487.07x = 35,887,972,881.28
  5. Step 5: Solve for x
    x = 35,887,972,881.28/171,487.07
  6. Step 6: Final answer
    x = 209,275.10

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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.