Home / 113,804.61-156,961.56-72,972.63

Finding the Fourth Proportional to 113,804.61, 156,961.56 and 72,972.63

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Solution

The fourth proportional to 113,804.61, 156,961.56 and 72,972.63 is: 100,645.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,804.61 : 156,961.56 = 72,972.63 : x
  2. Step 2: Convert to fraction form
    113,804.61/156,961.56 = 72,972.63/x
  3. Step 3: Cross multiply
    113,804.61x = 156,961.56 × 72,972.63
  4. Step 4: Simplify right side
    113,804.61x = 11,453,897,842.10
  5. Step 5: Solve for x
    x = 11,453,897,842.10/113,804.61
  6. Step 6: Final answer
    x = 100,645.29

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1.5x scale

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.