Home / 112,416.20-168,624.30-72,499.40

Finding the Fourth Proportional to 112,416.20, 168,624.30 and 72,499.40

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Solution

The fourth proportional to 112,416.20, 168,624.30 and 72,499.40 is: 108,749.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,416.20 : 168,624.30 = 72,499.40 : x
  2. Step 2: Convert to fraction form
    112,416.20/168,624.30 = 72,499.40/x
  3. Step 3: Cross multiply
    112,416.20x = 168,624.30 × 72,499.40
  4. Step 4: Simplify right side
    112,416.20x = 12,225,160,575.42
  5. Step 5: Solve for x
    x = 12,225,160,575.42/112,416.20
  6. Step 6: Final answer
    x = 108,749.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.