Home / 91,700.10-126,187.47-81,115.02

Finding the Fourth Proportional to 91,700.10, 126,187.47 and 81,115.02

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Solution

The fourth proportional to 91,700.10, 126,187.47 and 81,115.02 is: 111,621.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,700.10 : 126,187.47 = 81,115.02 : x
  2. Step 2: Convert to fraction form
    91,700.10/126,187.47 = 81,115.02/x
  3. Step 3: Cross multiply
    91,700.10x = 126,187.47 × 81,115.02
  4. Step 4: Simplify right side
    91,700.10x = 10,235,699,152.80
  5. Step 5: Solve for x
    x = 10,235,699,152.80/91,700.10
  6. Step 6: Final answer
    x = 111,621.46

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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.