Home / 100,732.02-139,010.48-55,414.63

Finding the Fourth Proportional to 100,732.02, 139,010.48 and 55,414.63

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Solution

The fourth proportional to 100,732.02, 139,010.48 and 55,414.63 is: 76,472.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,732.02 : 139,010.48 = 55,414.63 : x
  2. Step 2: Convert to fraction form
    100,732.02/139,010.48 = 55,414.63/x
  3. Step 3: Cross multiply
    100,732.02x = 139,010.48 × 55,414.63
  4. Step 4: Simplify right side
    100,732.02x = 7,703,214,315.32
  5. Step 5: Solve for x
    x = 7,703,214,315.32/100,732.02
  6. Step 6: Final answer
    x = 76,472.35

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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.