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Finding the Fourth Proportional to 105,230.40, 157,538.40 and 94,171.20

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Solution

The fourth proportional to 105,230.40, 157,538.40 and 94,171.20 is: 140,981.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,230.40 : 157,538.40 = 94,171.20 : x
  2. Step 2: Convert to fraction form
    105,230.40/157,538.40 = 94,171.20/x
  3. Step 3: Cross multiply
    105,230.40x = 157,538.40 × 94,171.20
  4. Step 4: Simplify right side
    105,230.40x = 14,835,580,174.08
  5. Step 5: Solve for x
    x = 14,835,580,174.08/105,230.40
  6. Step 6: Final answer
    x = 140,981.89

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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.