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Finding the Fourth Proportional to 140,259.80, 210,324.90 and 61,333.40

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Solution

The fourth proportional to 140,259.80, 210,324.90 and 61,333.40 is: 91,971.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,259.80 : 210,324.90 = 61,333.40 : x
  2. Step 2: Convert to fraction form
    140,259.80/210,324.90 = 61,333.40/x
  3. Step 3: Cross multiply
    140,259.80x = 210,324.90 × 61,333.40
  4. Step 4: Simplify right side
    140,259.80x = 12,899,941,221.66
  5. Step 5: Solve for x
    x = 12,899,941,221.66/140,259.80
  6. Step 6: Final answer
    x = 91,971.76

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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.