Home / 126,720.02-174,804.65-81,405.13

Finding the Fourth Proportional to 126,720.02, 174,804.65 and 81,405.13

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Solution

The fourth proportional to 126,720.02, 174,804.65 and 81,405.13 is: 112,294.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,720.02 : 174,804.65 = 81,405.13 : x
  2. Step 2: Convert to fraction form
    126,720.02/174,804.65 = 81,405.13/x
  3. Step 3: Cross multiply
    126,720.02x = 174,804.65 × 81,405.13
  4. Step 4: Simplify right side
    126,720.02x = 14,229,995,257.85
  5. Step 5: Solve for x
    x = 14,229,995,257.85/126,720.02
  6. Step 6: Final answer
    x = 112,294.77

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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.