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Finding the Fourth Proportional to 119,643.10, 165,114.72 and 65,928.07

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Solution

The fourth proportional to 119,643.10, 165,114.72 and 65,928.07 is: 90,984.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,643.10 : 165,114.72 = 65,928.07 : x
  2. Step 2: Convert to fraction form
    119,643.10/165,114.72 = 65,928.07/x
  3. Step 3: Cross multiply
    119,643.10x = 165,114.72 × 65,928.07
  4. Step 4: Simplify right side
    119,643.10x = 10,885,694,818.19
  5. Step 5: Solve for x
    x = 10,885,694,818.19/119,643.10
  6. Step 6: Final answer
    x = 90,984.73

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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.