Home / 105,835.21-158,539.56-70,316.53

Finding the Fourth Proportional to 105,835.21, 158,539.56 and 70,316.53

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Solution

The fourth proportional to 105,835.21, 158,539.56 and 70,316.53 is: 105,333.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,835.21 : 158,539.56 = 70,316.53 : x
  2. Step 2: Convert to fraction form
    105,835.21/158,539.56 = 70,316.53/x
  3. Step 3: Cross multiply
    105,835.21x = 158,539.56 × 70,316.53
  4. Step 4: Simplify right side
    105,835.21x = 11,147,951,726.93
  5. Step 5: Solve for x
    x = 11,147,951,726.93/105,835.21
  6. Step 6: Final answer
    x = 105,333.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.