Home / 112,503.68-155,220-74,784.32

Finding the Fourth Proportional to 112,503.68, 155,220 and 74,784.32

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Solution

The fourth proportional to 112,503.68, 155,220 and 74,784.32 is: 103,179.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,503.68 : 155,220 = 74,784.32 : x
  2. Step 2: Convert to fraction form
    112,503.68/155,220 = 74,784.32/x
  3. Step 3: Cross multiply
    112,503.68x = 155,220 × 74,784.32
  4. Step 4: Simplify right side
    112,503.68x = 11,608,022,150.40
  5. Step 5: Solve for x
    x = 11,608,022,150.40/112,503.68
  6. Step 6: Final answer
    x = 103,179.04

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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.