Home / 210,241.72-315,404.12-77,123.13

Finding the Fourth Proportional to 210,241.72, 315,404.12 and 77,123.13

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Solution

The fourth proportional to 210,241.72, 315,404.12 and 77,123.13 is: 115,699.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,241.72 : 315,404.12 = 77,123.13 : x
  2. Step 2: Convert to fraction form
    210,241.72/315,404.12 = 77,123.13/x
  3. Step 3: Cross multiply
    210,241.72x = 315,404.12 × 77,123.13
  4. Step 4: Simplify right side
    210,241.72x = 24,324,952,949.30
  5. Step 5: Solve for x
    x = 24,324,952,949.30/210,241.72
  6. Step 6: Final answer
    x = 115,699.93

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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.