Home / 125,421.20-173,080.56-68,831.36

Finding the Fourth Proportional to 125,421.20, 173,080.56 and 68,831.36

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Solution

The fourth proportional to 125,421.20, 173,080.56 and 68,831.36 is: 94,986.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,421.20 : 173,080.56 = 68,831.36 : x
  2. Step 2: Convert to fraction form
    125,421.20/173,080.56 = 68,831.36/x
  3. Step 3: Cross multiply
    125,421.20x = 173,080.56 × 68,831.36
  4. Step 4: Simplify right side
    125,421.20x = 11,913,370,334.36
  5. Step 5: Solve for x
    x = 11,913,370,334.36/125,421.20
  6. Step 6: Final answer
    x = 94,986.89

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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.