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Finding the Fourth Proportional to 119,616.75, 165,071.12 and 65,901.80

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Solution

The fourth proportional to 119,616.75, 165,071.12 and 65,901.80 is: 90,944.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,616.75 : 165,071.12 = 65,901.80 : x
  2. Step 2: Convert to fraction form
    119,616.75/165,071.12 = 65,901.80/x
  3. Step 3: Cross multiply
    119,616.75x = 165,071.12 × 65,901.80
  4. Step 4: Simplify right side
    119,616.75x = 10,878,484,019.18
  5. Step 5: Solve for x
    x = 10,878,484,019.18/119,616.75
  6. Step 6: Final answer
    x = 90,944.49

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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.