Home / 113,415.50-156,513.48-65,671.40

Finding the Fourth Proportional to 113,415.50, 156,513.48 and 65,671.40

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Solution

The fourth proportional to 113,415.50, 156,513.48 and 65,671.40 is: 90,626.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,415.50 : 156,513.48 = 65,671.40 : x
  2. Step 2: Convert to fraction form
    113,415.50/156,513.48 = 65,671.40/x
  3. Step 3: Cross multiply
    113,415.50x = 156,513.48 × 65,671.40
  4. Step 4: Simplify right side
    113,415.50x = 10,278,459,350.47
  5. Step 5: Solve for x
    x = 10,278,459,350.47/113,415.50
  6. Step 6: Final answer
    x = 90,626.58

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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.