Home / 126,998.61-190,459.02-87,807.57

Finding the Fourth Proportional to 126,998.61, 190,459.02 and 87,807.57

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Solution

The fourth proportional to 126,998.61, 190,459.02 and 87,807.57 is: 131,684.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,998.61 : 190,459.02 = 87,807.57 : x
  2. Step 2: Convert to fraction form
    126,998.61/190,459.02 = 87,807.57/x
  3. Step 3: Cross multiply
    126,998.61x = 190,459.02 × 87,807.57
  4. Step 4: Simplify right side
    126,998.61x = 16,723,743,730.78
  5. Step 5: Solve for x
    x = 16,723,743,730.78/126,998.61
  6. Step 6: Final answer
    x = 131,684.46

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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.