Home / 123,555.42-170,505.93-66,966.81

Finding the Fourth Proportional to 123,555.42, 170,505.93 and 66,966.81

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Solution

The fourth proportional to 123,555.42, 170,505.93 and 66,966.81 is: 92,413.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,555.42 : 170,505.93 = 66,966.81 : x
  2. Step 2: Convert to fraction form
    123,555.42/170,505.93 = 66,966.81/x
  3. Step 3: Cross multiply
    123,555.42x = 170,505.93 × 66,966.81
  4. Step 4: Simplify right side
    123,555.42x = 11,418,238,218.18
  5. Step 5: Solve for x
    x = 11,418,238,218.18/123,555.42
  6. Step 6: Final answer
    x = 92,413.90

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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.