Home / 105,438.52-158,157.88-43,109.02

Finding the Fourth Proportional to 105,438.52, 158,157.88 and 43,109.02

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Solution

The fourth proportional to 105,438.52, 158,157.88 and 43,109.02 is: 64,663.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,438.52 : 158,157.88 = 43,109.02 : x
  2. Step 2: Convert to fraction form
    105,438.52/158,157.88 = 43,109.02/x
  3. Step 3: Cross multiply
    105,438.52x = 158,157.88 × 43,109.02
  4. Step 4: Simplify right side
    105,438.52x = 6,818,031,212.08
  5. Step 5: Solve for x
    x = 6,818,031,212.08/105,438.52
  6. Step 6: Final answer
    x = 64,663.57

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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.