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Finding the Fourth Proportional to 144,020.90, 216,031.35 and 120,692.90

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Solution

The fourth proportional to 144,020.90, 216,031.35 and 120,692.90 is: 181,039.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,020.90 : 216,031.35 = 120,692.90 : x
  2. Step 2: Convert to fraction form
    144,020.90/216,031.35 = 120,692.90/x
  3. Step 3: Cross multiply
    144,020.90x = 216,031.35 × 120,692.90
  4. Step 4: Simplify right side
    144,020.90x = 26,073,450,122.42
  5. Step 5: Solve for x
    x = 26,073,450,122.42/144,020.90
  6. Step 6: Final answer
    x = 181,039.35

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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.