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Finding the Fourth Proportional to 110,917, 153,070.96 and 65,621.48

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Solution

The fourth proportional to 110,917, 153,070.96 and 65,621.48 is: 90,560.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,917 : 153,070.96 = 65,621.48 : x
  2. Step 2: Convert to fraction form
    110,917/153,070.96 = 65,621.48/x
  3. Step 3: Cross multiply
    110,917x = 153,070.96 × 65,621.48
  4. Step 4: Simplify right side
    110,917x = 10,044,742,940.22
  5. Step 5: Solve for x
    x = 10,044,742,940.22/110,917
  6. Step 6: Final answer
    x = 90,560.90

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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.