Home / 231,065.40-318,858.84-129,070.62

Finding the Fourth Proportional to 231,065.40, 318,858.84 and 129,070.62

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Solution

The fourth proportional to 231,065.40, 318,858.84 and 129,070.62 is: 178,111.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,065.40 : 318,858.84 = 129,070.62 : x
  2. Step 2: Convert to fraction form
    231,065.40/318,858.84 = 129,070.62/x
  3. Step 3: Cross multiply
    231,065.40x = 318,858.84 × 129,070.62
  4. Step 4: Simplify right side
    231,065.40x = 41,155,308,171.28
  5. Step 5: Solve for x
    x = 41,155,308,171.28/231,065.40
  6. Step 6: Final answer
    x = 178,111.08

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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.