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Finding the Fourth Proportional to 144,005.80, 215,619.90 and 144,005.80

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Solution

The fourth proportional to 144,005.80, 215,619.90 and 144,005.80 is: 215,619.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,005.80 : 215,619.90 = 144,005.80 : x
  2. Step 2: Convert to fraction form
    144,005.80/215,619.90 = 144,005.80/x
  3. Step 3: Cross multiply
    144,005.80x = 215,619.90 × 144,005.80
  4. Step 4: Simplify right side
    144,005.80x = 31,050,516,195.42
  5. Step 5: Solve for x
    x = 31,050,516,195.42/144,005.80
  6. Step 6: Final answer
    x = 215,619.90

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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.