Home / 112,404.64-155,221.99-72,188.46

Finding the Fourth Proportional to 112,404.64, 155,221.99 and 72,188.46

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Solution

The fourth proportional to 112,404.64, 155,221.99 and 72,188.46 is: 99,686.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,404.64 : 155,221.99 = 72,188.46 : x
  2. Step 2: Convert to fraction form
    112,404.64/155,221.99 = 72,188.46/x
  3. Step 3: Cross multiply
    112,404.64x = 155,221.99 × 72,188.46
  4. Step 4: Simplify right side
    112,404.64x = 11,205,236,416.24
  5. Step 5: Solve for x
    x = 11,205,236,416.24/112,404.64
  6. Step 6: Final answer
    x = 99,686.60

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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.