Home / 103,931.22-143,329.42-68,108.22

Finding the Fourth Proportional to 103,931.22, 143,329.42 and 68,108.22

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Solution

The fourth proportional to 103,931.22, 143,329.42 and 68,108.22 is: 93,926.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,931.22 : 143,329.42 = 68,108.22 : x
  2. Step 2: Convert to fraction form
    103,931.22/143,329.42 = 68,108.22/x
  3. Step 3: Cross multiply
    103,931.22x = 143,329.42 × 68,108.22
  4. Step 4: Simplify right side
    103,931.22x = 9,761,911,669.83
  5. Step 5: Solve for x
    x = 9,761,911,669.83/103,931.22
  6. Step 6: Final answer
    x = 93,926.65

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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.