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Finding the Fourth Proportional to 105,274.36, 145,264.62 and 67,599.64

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Solution

The fourth proportional to 105,274.36, 145,264.62 and 67,599.64 is: 93,278.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,274.36 : 145,264.62 = 67,599.64 : x
  2. Step 2: Convert to fraction form
    105,274.36/145,264.62 = 67,599.64/x
  3. Step 3: Cross multiply
    105,274.36x = 145,264.62 × 67,599.64
  4. Step 4: Simplify right side
    105,274.36x = 9,819,836,016.74
  5. Step 5: Solve for x
    x = 9,819,836,016.74/105,274.36
  6. Step 6: Final answer
    x = 93,278.52

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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.