Home / 105,294.20-145,205.44-68,941.40

Finding the Fourth Proportional to 105,294.20, 145,205.44 and 68,941.40

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Solution

The fourth proportional to 105,294.20, 145,205.44 and 68,941.40 is: 95,073.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,294.20 : 145,205.44 = 68,941.40 : x
  2. Step 2: Convert to fraction form
    105,294.20/145,205.44 = 68,941.40/x
  3. Step 3: Cross multiply
    105,294.20x = 145,205.44 × 68,941.40
  4. Step 4: Simplify right side
    105,294.20x = 10,010,666,321.22
  5. Step 5: Solve for x
    x = 10,010,666,321.22/105,294.20
  6. Step 6: Final answer
    x = 95,073.29

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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.