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Finding the Fourth Proportional to 97,430.60, 146,145.90 and 67,939.40

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Solution

The fourth proportional to 97,430.60, 146,145.90 and 67,939.40 is: 101,909.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,430.60 : 146,145.90 = 67,939.40 : x
  2. Step 2: Convert to fraction form
    97,430.60/146,145.90 = 67,939.40/x
  3. Step 3: Cross multiply
    97,430.60x = 146,145.90 × 67,939.40
  4. Step 4: Simplify right side
    97,430.60x = 9,929,064,758.46
  5. Step 5: Solve for x
    x = 9,929,064,758.46/97,430.60
  6. Step 6: Final answer
    x = 101,909.10

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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.