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Finding the Fourth Proportional to 113,812.76, 156,965.21 and 68,482.28

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Solution

The fourth proportional to 113,812.76, 156,965.21 and 68,482.28 is: 94,447.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,812.76 : 156,965.21 = 68,482.28 : x
  2. Step 2: Convert to fraction form
    113,812.76/156,965.21 = 68,482.28/x
  3. Step 3: Cross multiply
    113,812.76x = 156,965.21 × 68,482.28
  4. Step 4: Simplify right side
    113,812.76x = 10,749,335,461.48
  5. Step 5: Solve for x
    x = 10,749,335,461.48/113,812.76
  6. Step 6: Final answer
    x = 94,447.54

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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.