Home / 99,971.55-137,961.01-54,650.07

Finding the Fourth Proportional to 99,971.55, 137,961.01 and 54,650.07

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Solution

The fourth proportional to 99,971.55, 137,961.01 and 54,650.07 is: 75,417.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,971.55 : 137,961.01 = 54,650.07 : x
  2. Step 2: Convert to fraction form
    99,971.55/137,961.01 = 54,650.07/x
  3. Step 3: Cross multiply
    99,971.55x = 137,961.01 × 54,650.07
  4. Step 4: Simplify right side
    99,971.55x = 7,539,578,717.15
  5. Step 5: Solve for x
    x = 7,539,578,717.15/99,971.55
  6. Step 6: Final answer
    x = 75,417.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.