Home / 104,428.80-156,643.20-68,999.40

Finding the Fourth Proportional to 104,428.80, 156,643.20 and 68,999.40

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Solution

The fourth proportional to 104,428.80, 156,643.20 and 68,999.40 is: 103,499.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,428.80 : 156,643.20 = 68,999.40 : x
  2. Step 2: Convert to fraction form
    104,428.80/156,643.20 = 68,999.40/x
  3. Step 3: Cross multiply
    104,428.80x = 156,643.20 × 68,999.40
  4. Step 4: Simplify right side
    104,428.80x = 10,808,286,814.08
  5. Step 5: Solve for x
    x = 10,808,286,814.08/104,428.80
  6. Step 6: Final answer
    x = 103,499.10

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Similar ratio
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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.