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Finding the Fourth Proportional to 119,885.72, 165,430.49 and 66,167.26

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Solution

The fourth proportional to 119,885.72, 165,430.49 and 66,167.26 is: 91,304.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,885.72 : 165,430.49 = 66,167.26 : x
  2. Step 2: Convert to fraction form
    119,885.72/165,430.49 = 66,167.26/x
  3. Step 3: Cross multiply
    119,885.72x = 165,430.49 × 66,167.26
  4. Step 4: Simplify right side
    119,885.72x = 10,946,081,499.34
  5. Step 5: Solve for x
    x = 10,946,081,499.34/119,885.72
  6. Step 6: Final answer
    x = 91,304.30

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1.5x scale

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.