Home / 105,418.04-145,390.29-75,193.70

Finding the Fourth Proportional to 105,418.04, 145,390.29 and 75,193.70

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Solution

The fourth proportional to 105,418.04, 145,390.29 and 75,193.70 is: 103,705.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,418.04 : 145,390.29 = 75,193.70 : x
  2. Step 2: Convert to fraction form
    105,418.04/145,390.29 = 75,193.70/x
  3. Step 3: Cross multiply
    105,418.04x = 145,390.29 × 75,193.70
  4. Step 4: Simplify right side
    105,418.04x = 10,932,433,849.17
  5. Step 5: Solve for x
    x = 10,932,433,849.17/105,418.04
  6. Step 6: Final answer
    x = 103,705.53

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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.