Home / 112,877.20-155,772.30-61,894.60

Finding the Fourth Proportional to 112,877.20, 155,772.30 and 61,894.60

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Solution

The fourth proportional to 112,877.20, 155,772.30 and 61,894.60 is: 85,415.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,877.20 : 155,772.30 = 61,894.60 : x
  2. Step 2: Convert to fraction form
    112,877.20/155,772.30 = 61,894.60/x
  3. Step 3: Cross multiply
    112,877.20x = 155,772.30 × 61,894.60
  4. Step 4: Simplify right side
    112,877.20x = 9,641,464,199.58
  5. Step 5: Solve for x
    x = 9,641,464,199.58/112,877.20
  6. Step 6: Final answer
    x = 85,415.52

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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.