Home / 210,241.35-315,403.56-77,122.76

Finding the Fourth Proportional to 210,241.35, 315,403.56 and 77,122.76

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Solution

The fourth proportional to 210,241.35, 315,403.56 and 77,122.76 is: 115,699.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,241.35 : 315,403.56 = 77,122.76 : x
  2. Step 2: Convert to fraction form
    210,241.35/315,403.56 = 77,122.76/x
  3. Step 3: Cross multiply
    210,241.35x = 315,403.56 × 77,122.76
  4. Step 4: Simplify right side
    210,241.35x = 24,324,791,484.01
  5. Step 5: Solve for x
    x = 24,324,791,484.01/210,241.35
  6. Step 6: Final answer
    x = 115,699.37

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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.