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Finding the Fourth Proportional to 112,286.76, 154,955.76 and 61,985.76

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Solution

The fourth proportional to 112,286.76, 154,955.76 and 61,985.76 is: 85,540.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,286.76 : 154,955.76 = 61,985.76 : x
  2. Step 2: Convert to fraction form
    112,286.76/154,955.76 = 61,985.76/x
  3. Step 3: Cross multiply
    112,286.76x = 154,955.76 × 61,985.76
  4. Step 4: Simplify right side
    112,286.76x = 9,605,050,549.98
  5. Step 5: Solve for x
    x = 9,605,050,549.98/112,286.76
  6. Step 6: Final answer
    x = 85,540.37

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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.