Home / 115,538.80-173,308.20-99,792.40

Finding the Fourth Proportional to 115,538.80, 173,308.20 and 99,792.40

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Solution

The fourth proportional to 115,538.80, 173,308.20 and 99,792.40 is: 149,688.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,538.80 : 173,308.20 = 99,792.40 : x
  2. Step 2: Convert to fraction form
    115,538.80/173,308.20 = 99,792.40/x
  3. Step 3: Cross multiply
    115,538.80x = 173,308.20 × 99,792.40
  4. Step 4: Simplify right side
    115,538.80x = 17,294,841,217.68
  5. Step 5: Solve for x
    x = 17,294,841,217.68/115,538.80
  6. Step 6: Final answer
    x = 149,688.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.