Home / 112,372.40-168,364.20-72,909.20

Finding the Fourth Proportional to 112,372.40, 168,364.20 and 72,909.20

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Solution

The fourth proportional to 112,372.40, 168,364.20 and 72,909.20 is: 109,237.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,372.40 : 168,364.20 = 72,909.20 : x
  2. Step 2: Convert to fraction form
    112,372.40/168,364.20 = 72,909.20/x
  3. Step 3: Cross multiply
    112,372.40x = 168,364.20 × 72,909.20
  4. Step 4: Simplify right side
    112,372.40x = 12,275,299,130.64
  5. Step 5: Solve for x
    x = 12,275,299,130.64/112,372.40
  6. Step 6: Final answer
    x = 109,237.67

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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.