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Finding the Fourth Proportional to 106,354.42, 146,769.36 and 57,956.72

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Solution

The fourth proportional to 106,354.42, 146,769.36 and 57,956.72 is: 79,980.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,354.42 : 146,769.36 = 57,956.72 : x
  2. Step 2: Convert to fraction form
    106,354.42/146,769.36 = 57,956.72/x
  3. Step 3: Cross multiply
    106,354.42x = 146,769.36 × 57,956.72
  4. Step 4: Simplify right side
    106,354.42x = 8,506,270,702.10
  5. Step 5: Solve for x
    x = 8,506,270,702.10/106,354.42
  6. Step 6: Final answer
    x = 79,980.42

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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.