Home / 129,277.19-178,388.92-71,907.19

Finding the Fourth Proportional to 129,277.19, 178,388.92 and 71,907.19

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Solution

The fourth proportional to 129,277.19, 178,388.92 and 71,907.19 is: 99,224.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,277.19 : 178,388.92 = 71,907.19 : x
  2. Step 2: Convert to fraction form
    129,277.19/178,388.92 = 71,907.19/x
  3. Step 3: Cross multiply
    129,277.19x = 178,388.92 × 71,907.19
  4. Step 4: Simplify right side
    129,277.19x = 12,827,445,964.33
  5. Step 5: Solve for x
    x = 12,827,445,964.33/129,277.19
  6. Step 6: Final answer
    x = 99,224.36

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1.5x scale

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.