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Finding the Fourth Proportional to 115,883.60, 173,695.80 and 65,987.60

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Solution

The fourth proportional to 115,883.60, 173,695.80 and 65,987.60 is: 98,907.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,883.60 : 173,695.80 = 65,987.60 : x
  2. Step 2: Convert to fraction form
    115,883.60/173,695.80 = 65,987.60/x
  3. Step 3: Cross multiply
    115,883.60x = 173,695.80 × 65,987.60
  4. Step 4: Simplify right side
    115,883.60x = 11,461,768,972.08
  5. Step 5: Solve for x
    x = 11,461,768,972.08/115,883.60
  6. Step 6: Final answer
    x = 98,907.60

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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.