Home / 100,814.06-139,123.90-55,496.58

Finding the Fourth Proportional to 100,814.06, 139,123.90 and 55,496.58

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Solution

The fourth proportional to 100,814.06, 139,123.90 and 55,496.58 is: 76,585.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,814.06 : 139,123.90 = 55,496.58 : x
  2. Step 2: Convert to fraction form
    100,814.06/139,123.90 = 55,496.58/x
  3. Step 3: Cross multiply
    100,814.06x = 139,123.90 × 55,496.58
  4. Step 4: Simplify right side
    100,814.06x = 7,720,900,646.26
  5. Step 5: Solve for x
    x = 7,720,900,646.26/100,814.06
  6. Step 6: Final answer
    x = 76,585.55

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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.