Home / 98,123.19-135,374.57-55,657.12

Finding the Fourth Proportional to 98,123.19, 135,374.57 and 55,657.12

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Solution

The fourth proportional to 98,123.19, 135,374.57 and 55,657.12 is: 76,786.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,123.19 : 135,374.57 = 55,657.12 : x
  2. Step 2: Convert to fraction form
    98,123.19/135,374.57 = 55,657.12/x
  3. Step 3: Cross multiply
    98,123.19x = 135,374.57 × 55,657.12
  4. Step 4: Simplify right side
    98,123.19x = 7,534,558,687.44
  5. Step 5: Solve for x
    x = 7,534,558,687.44/98,123.19
  6. Step 6: Final answer
    x = 76,786.73

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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.