Home / 140,129.20-210,266.70-61,251.40

Finding the Fourth Proportional to 140,129.20, 210,266.70 and 61,251.40

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Solution

The fourth proportional to 140,129.20, 210,266.70 and 61,251.40 is: 91,908.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,129.20 : 210,266.70 = 61,251.40 : x
  2. Step 2: Convert to fraction form
    140,129.20/210,266.70 = 61,251.40/x
  3. Step 3: Cross multiply
    140,129.20x = 210,266.70 × 61,251.40
  4. Step 4: Simplify right side
    140,129.20x = 12,879,129,748.38
  5. Step 5: Solve for x
    x = 12,879,129,748.38/140,129.20
  6. Step 6: Final answer
    x = 91,908.97

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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.