Home / 112,538.80-168,581.40-70,289.20

Finding the Fourth Proportional to 112,538.80, 168,581.40 and 70,289.20

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Solution

The fourth proportional to 112,538.80, 168,581.40 and 70,289.20 is: 105,292.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,538.80 : 168,581.40 = 70,289.20 : x
  2. Step 2: Convert to fraction form
    112,538.80/168,581.40 = 70,289.20/x
  3. Step 3: Cross multiply
    112,538.80x = 168,581.40 × 70,289.20
  4. Step 4: Simplify right side
    112,538.80x = 11,849,451,740.88
  5. Step 5: Solve for x
    x = 11,849,451,740.88/112,538.80
  6. Step 6: Final answer
    x = 105,292.15

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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.