Home / 112,468.60-155,145.22-72,137.48

Finding the Fourth Proportional to 112,468.60, 155,145.22 and 72,137.48

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Solution

The fourth proportional to 112,468.60, 155,145.22 and 72,137.48 is: 99,510.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,468.60 : 155,145.22 = 72,137.48 : x
  2. Step 2: Convert to fraction form
    112,468.60/155,145.22 = 72,137.48/x
  3. Step 3: Cross multiply
    112,468.60x = 155,145.22 × 72,137.48
  4. Step 4: Simplify right side
    112,468.60x = 11,191,785,204.85
  5. Step 5: Solve for x
    x = 11,191,785,204.85/112,468.60
  6. Step 6: Final answer
    x = 99,510.31

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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.