Home / 104,011.20-156,021.12-86,603.76

Finding the Fourth Proportional to 104,011.20, 156,021.12 and 86,603.76

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Solution

The fourth proportional to 104,011.20, 156,021.12 and 86,603.76 is: 129,909.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,011.20 : 156,021.12 = 86,603.76 : x
  2. Step 2: Convert to fraction form
    104,011.20/156,021.12 = 86,603.76/x
  3. Step 3: Cross multiply
    104,011.20x = 156,021.12 × 86,603.76
  4. Step 4: Simplify right side
    104,011.20x = 13,512,015,631.41
  5. Step 5: Solve for x
    x = 13,512,015,631.41/104,011.20
  6. Step 6: Final answer
    x = 129,909.24

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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.