Home / 113,138.88-156,209.76-70,716.48

Finding the Fourth Proportional to 113,138.88, 156,209.76 and 70,716.48

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Solution

The fourth proportional to 113,138.88, 156,209.76 and 70,716.48 is: 97,637.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,138.88 : 156,209.76 = 70,716.48 : x
  2. Step 2: Convert to fraction form
    113,138.88/156,209.76 = 70,716.48/x
  3. Step 3: Cross multiply
    113,138.88x = 156,209.76 × 70,716.48
  4. Step 4: Simplify right side
    113,138.88x = 11,046,604,368.84
  5. Step 5: Solve for x
    x = 11,046,604,368.84/113,138.88
  6. Step 6: Final answer
    x = 97,637.56

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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.