Home / 112,758.78-155,607.30-61,770.40

Finding the Fourth Proportional to 112,758.78, 155,607.30 and 61,770.40

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Solution

The fourth proportional to 112,758.78, 155,607.30 and 61,770.40 is: 85,243.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,758.78 : 155,607.30 = 61,770.40 : x
  2. Step 2: Convert to fraction form
    112,758.78/155,607.30 = 61,770.40/x
  3. Step 3: Cross multiply
    112,758.78x = 155,607.30 × 61,770.40
  4. Step 4: Simplify right side
    112,758.78x = 9,611,925,163.92
  5. Step 5: Solve for x
    x = 9,611,925,163.92/112,758.78
  6. Step 6: Final answer
    x = 85,243.25

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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.