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Finding the Fourth Proportional to 120,263.78, 165,981.62 and 69,266.71

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Solution

The fourth proportional to 120,263.78, 165,981.62 and 69,266.71 is: 95,598.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,263.78 : 165,981.62 = 69,266.71 : x
  2. Step 2: Convert to fraction form
    120,263.78/165,981.62 = 69,266.71/x
  3. Step 3: Cross multiply
    120,263.78x = 165,981.62 × 69,266.71
  4. Step 4: Simplify right side
    120,263.78x = 11,496,999,907.96
  5. Step 5: Solve for x
    x = 11,496,999,907.96/120,263.78
  6. Step 6: Final answer
    x = 95,598.19

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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.