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Finding the Fourth Proportional to 147,000.40, 220,630.20 and 126,005.20

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Solution

The fourth proportional to 147,000.40, 220,630.20 and 126,005.20 is: 189,118.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,000.40 : 220,630.20 = 126,005.20 : x
  2. Step 2: Convert to fraction form
    147,000.40/220,630.20 = 126,005.20/x
  3. Step 3: Cross multiply
    147,000.40x = 220,630.20 × 126,005.20
  4. Step 4: Simplify right side
    147,000.40x = 27,800,552,477.04
  5. Step 5: Solve for x
    x = 27,800,552,477.04/147,000.40
  6. Step 6: Final answer
    x = 189,118.89

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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.