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Finding the Fourth Proportional to 113,351.19, 156,422.12 and 65,603.58

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Solution

The fourth proportional to 113,351.19, 156,422.12 and 65,603.58 is: 90,531.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,351.19 : 156,422.12 = 65,603.58 : x
  2. Step 2: Convert to fraction form
    113,351.19/156,422.12 = 65,603.58/x
  3. Step 3: Cross multiply
    113,351.19x = 156,422.12 × 65,603.58
  4. Step 4: Simplify right side
    113,351.19x = 10,261,850,735.17
  5. Step 5: Solve for x
    x = 10,261,850,735.17/113,351.19
  6. Step 6: Final answer
    x = 90,531.48

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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.