Home / 112,840.77-155,723.33-81,069.13

Finding the Fourth Proportional to 112,840.77, 155,723.33 and 81,069.13

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Solution

The fourth proportional to 112,840.77, 155,723.33 and 81,069.13 is: 111,877.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,840.77 : 155,723.33 = 81,069.13 : x
  2. Step 2: Convert to fraction form
    112,840.77/155,723.33 = 81,069.13/x
  3. Step 3: Cross multiply
    112,840.77x = 155,723.33 × 81,069.13
  4. Step 4: Simplify right side
    112,840.77x = 12,624,354,883.80
  5. Step 5: Solve for x
    x = 12,624,354,883.80/112,840.77
  6. Step 6: Final answer
    x = 111,877.60

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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.