Home / 115,538.40-173,307.60-71,020.80

Finding the Fourth Proportional to 115,538.40, 173,307.60 and 71,020.80

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Solution

The fourth proportional to 115,538.40, 173,307.60 and 71,020.80 is: 106,531.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,538.40 : 173,307.60 = 71,020.80 : x
  2. Step 2: Convert to fraction form
    115,538.40/173,307.60 = 71,020.80/x
  3. Step 3: Cross multiply
    115,538.40x = 173,307.60 × 71,020.80
  4. Step 4: Simplify right side
    115,538.40x = 12,308,444,398.08
  5. Step 5: Solve for x
    x = 12,308,444,398.08/115,538.40
  6. Step 6: Final answer
    x = 106,531.20

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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.