Home / 100,860.07-139,125.48-62,104.15

Finding the Fourth Proportional to 100,860.07, 139,125.48 and 62,104.15

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Solution

The fourth proportional to 100,860.07, 139,125.48 and 62,104.15 is: 85,665.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,860.07 : 139,125.48 = 62,104.15 : x
  2. Step 2: Convert to fraction form
    100,860.07/139,125.48 = 62,104.15/x
  3. Step 3: Cross multiply
    100,860.07x = 139,125.48 × 62,104.15
  4. Step 4: Simplify right side
    100,860.07x = 8,640,269,678.74
  5. Step 5: Solve for x
    x = 8,640,269,678.74/100,860.07
  6. Step 6: Final answer
    x = 85,665.91

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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.