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Finding the Fourth Proportional to 120,812.16, 166,711.02 and 69,828.19

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Solution

The fourth proportional to 120,812.16, 166,711.02 and 69,828.19 is: 96,357.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,812.16 : 166,711.02 = 69,828.19 : x
  2. Step 2: Convert to fraction form
    120,812.16/166,711.02 = 69,828.19/x
  3. Step 3: Cross multiply
    120,812.16x = 166,711.02 × 69,828.19
  4. Step 4: Simplify right side
    120,812.16x = 11,641,128,101.02
  5. Step 5: Solve for x
    x = 11,641,128,101.02/120,812.16
  6. Step 6: Final answer
    x = 96,357.26

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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.