Home / 112,855.04-155,738.94-61,870.68

Finding the Fourth Proportional to 112,855.04, 155,738.94 and 61,870.68

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Solution

The fourth proportional to 112,855.04, 155,738.94 and 61,870.68 is: 85,380.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,855.04 : 155,738.94 = 61,870.68 : x
  2. Step 2: Convert to fraction form
    112,855.04/155,738.94 = 61,870.68/x
  3. Step 3: Cross multiply
    112,855.04x = 155,738.94 × 61,870.68
  4. Step 4: Simplify right side
    112,855.04x = 9,635,674,120.28
  5. Step 5: Solve for x
    x = 9,635,674,120.28/112,855.04
  6. Step 6: Final answer
    x = 85,380.98

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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.