Home / 112,416.64-155,207.30-72,147.76

Finding the Fourth Proportional to 112,416.64, 155,207.30 and 72,147.76

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Solution

The fourth proportional to 112,416.64, 155,207.30 and 72,147.76 is: 99,610.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,416.64 : 155,207.30 = 72,147.76 : x
  2. Step 2: Convert to fraction form
    112,416.64/155,207.30 = 72,147.76/x
  3. Step 3: Cross multiply
    112,416.64x = 155,207.30 × 72,147.76
  4. Step 4: Simplify right side
    112,416.64x = 11,197,859,030.65
  5. Step 5: Solve for x
    x = 11,197,859,030.65/112,416.64
  6. Step 6: Final answer
    x = 99,610.33

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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.