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Finding the Fourth Proportional to 113,264.49, 156,074.49 and 87,615.03

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Solution

The fourth proportional to 113,264.49, 156,074.49 and 87,615.03 is: 120,730.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,264.49 : 156,074.49 = 87,615.03 : x
  2. Step 2: Convert to fraction form
    113,264.49/156,074.49 = 87,615.03/x
  3. Step 3: Cross multiply
    113,264.49x = 156,074.49 × 87,615.03
  4. Step 4: Simplify right side
    113,264.49x = 13,674,471,123.58
  5. Step 5: Solve for x
    x = 13,674,471,123.58/113,264.49
  6. Step 6: Final answer
    x = 120,730.43

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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.