Home / 113,712.40-156,962.28-68,415.76

Finding the Fourth Proportional to 113,712.40, 156,962.28 and 68,415.76

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Solution

The fourth proportional to 113,712.40, 156,962.28 and 68,415.76 is: 94,437.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,712.40 : 156,962.28 = 68,415.76 : x
  2. Step 2: Convert to fraction form
    113,712.40/156,962.28 = 68,415.76/x
  3. Step 3: Cross multiply
    113,712.40x = 156,962.28 × 68,415.76
  4. Step 4: Simplify right side
    113,712.40x = 10,738,693,677.53
  5. Step 5: Solve for x
    x = 10,738,693,677.53/113,712.40
  6. Step 6: Final answer
    x = 94,437.31

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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.