Home / 136,555.56-188,437.05-76,123.53

Finding the Fourth Proportional to 136,555.56, 188,437.05 and 76,123.53

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Solution

The fourth proportional to 136,555.56, 188,437.05 and 76,123.53 is: 105,045.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,555.56 : 188,437.05 = 76,123.53 : x
  2. Step 2: Convert to fraction form
    136,555.56/188,437.05 = 76,123.53/x
  3. Step 3: Cross multiply
    136,555.56x = 188,437.05 × 76,123.53
  4. Step 4: Simplify right side
    136,555.56x = 14,344,493,428.79
  5. Step 5: Solve for x
    x = 14,344,493,428.79/136,555.56
  6. Step 6: Final answer
    x = 105,045.11

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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.