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Finding the Fourth Proportional to 100,254.48, 138,500.96 and 65,880.48

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Solution

The fourth proportional to 100,254.48, 138,500.96 and 65,880.48 is: 91,013.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,254.48 : 138,500.96 = 65,880.48 : x
  2. Step 2: Convert to fraction form
    100,254.48/138,500.96 = 65,880.48/x
  3. Step 3: Cross multiply
    100,254.48x = 138,500.96 × 65,880.48
  4. Step 4: Simplify right side
    100,254.48x = 9,124,509,725.26
  5. Step 5: Solve for x
    x = 9,124,509,725.26/100,254.48
  6. Step 6: Final answer
    x = 91,013.49

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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.