Home / 105,530.61-158,185.08-38,928.36

Finding the Fourth Proportional to 105,530.61, 158,185.08 and 38,928.36

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Solution

The fourth proportional to 105,530.61, 158,185.08 and 38,928.36 is: 58,351.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,530.61 : 158,185.08 = 38,928.36 : x
  2. Step 2: Convert to fraction form
    105,530.61/158,185.08 = 38,928.36/x
  3. Step 3: Cross multiply
    105,530.61x = 158,185.08 × 38,928.36
  4. Step 4: Simplify right side
    105,530.61x = 6,157,885,740.87
  5. Step 5: Solve for x
    x = 6,157,885,740.87/105,530.61
  6. Step 6: Final answer
    x = 58,351.65

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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.