Home / 112,103.28-154,615.05-71,820.80

Finding the Fourth Proportional to 112,103.28, 154,615.05 and 71,820.80

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Solution

The fourth proportional to 112,103.28, 154,615.05 and 71,820.80 is: 99,056.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,103.28 : 154,615.05 = 71,820.80 : x
  2. Step 2: Convert to fraction form
    112,103.28/154,615.05 = 71,820.80/x
  3. Step 3: Cross multiply
    112,103.28x = 154,615.05 × 71,820.80
  4. Step 4: Simplify right side
    112,103.28x = 11,104,575,809.96
  5. Step 5: Solve for x
    x = 11,104,575,809.96/112,103.28
  6. Step 6: Final answer
    x = 99,056.65

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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.