Home / 100,300.80-138,429.84-57,851.04

Finding the Fourth Proportional to 100,300.80, 138,429.84 and 57,851.04

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Solution

The fourth proportional to 100,300.80, 138,429.84 and 57,851.04 is: 79,842.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,300.80 : 138,429.84 = 57,851.04 : x
  2. Step 2: Convert to fraction form
    100,300.80/138,429.84 = 57,851.04/x
  3. Step 3: Cross multiply
    100,300.80x = 138,429.84 × 57,851.04
  4. Step 4: Simplify right side
    100,300.80x = 8,008,310,211.03
  5. Step 5: Solve for x
    x = 8,008,310,211.03/100,300.80
  6. Step 6: Final answer
    x = 79,842.93

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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.