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Finding the Fourth Proportional to 144,000.40, 215,903.40 and 76,543.60

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Solution

The fourth proportional to 144,000.40, 215,903.40 and 76,543.60 is: 114,763.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,000.40 : 215,903.40 = 76,543.60 : x
  2. Step 2: Convert to fraction form
    144,000.40/215,903.40 = 76,543.60/x
  3. Step 3: Cross multiply
    144,000.40x = 215,903.40 × 76,543.60
  4. Step 4: Simplify right side
    144,000.40x = 16,526,023,488.24
  5. Step 5: Solve for x
    x = 16,526,023,488.24/144,000.40
  6. Step 6: Final answer
    x = 114,763.73

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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.