Home / 123,513.40-170,448.60-66,924.78

Finding the Fourth Proportional to 123,513.40, 170,448.60 and 66,924.78

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Solution

The fourth proportional to 123,513.40, 170,448.60 and 66,924.78 is: 92,356.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,513.40 : 170,448.60 = 66,924.78 : x
  2. Step 2: Convert to fraction form
    123,513.40/170,448.60 = 66,924.78/x
  3. Step 3: Cross multiply
    123,513.40x = 170,448.60 × 66,924.78
  4. Step 4: Simplify right side
    123,513.40x = 11,407,235,056.31
  5. Step 5: Solve for x
    x = 11,407,235,056.31/123,513.40
  6. Step 6: Final answer
    x = 92,356.25

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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.