Home / 105,397.59-145,407.82-67,150.29

Finding the Fourth Proportional to 105,397.59, 145,407.82 and 67,150.29

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Solution

The fourth proportional to 105,397.59, 145,407.82 and 67,150.29 is: 92,641.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,397.59 : 145,407.82 = 67,150.29 : x
  2. Step 2: Convert to fraction form
    105,397.59/145,407.82 = 67,150.29/x
  3. Step 3: Cross multiply
    105,397.59x = 145,407.82 × 67,150.29
  4. Step 4: Simplify right side
    105,397.59x = 9,764,176,218.48
  5. Step 5: Solve for x
    x = 9,764,176,218.48/105,397.59
  6. Step 6: Final answer
    x = 92,641.37

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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.