Home / 126,415.64-174,487.11-78,641.84

Finding the Fourth Proportional to 126,415.64, 174,487.11 and 78,641.84

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Solution

The fourth proportional to 126,415.64, 174,487.11 and 78,641.84 is: 108,546.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,415.64 : 174,487.11 = 78,641.84 : x
  2. Step 2: Convert to fraction form
    126,415.64/174,487.11 = 78,641.84/x
  3. Step 3: Cross multiply
    126,415.64x = 174,487.11 × 78,641.84
  4. Step 4: Simplify right side
    126,415.64x = 13,721,987,386.68
  5. Step 5: Solve for x
    x = 13,721,987,386.68/126,415.64
  6. Step 6: Final answer
    x = 108,546.60

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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.