Home / 112,620.77-155,349.09-74,380.40

Finding the Fourth Proportional to 112,620.77, 155,349.09 and 74,380.40

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Solution

The fourth proportional to 112,620.77, 155,349.09 and 74,380.40 is: 102,600.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,620.77 : 155,349.09 = 74,380.40 : x
  2. Step 2: Convert to fraction form
    112,620.77/155,349.09 = 74,380.40/x
  3. Step 3: Cross multiply
    112,620.77x = 155,349.09 × 74,380.40
  4. Step 4: Simplify right side
    112,620.77x = 11,554,926,956.02
  5. Step 5: Solve for x
    x = 11,554,926,956.02/112,620.77
  6. Step 6: Final answer
    x = 102,600.32

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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.