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Finding the Fourth Proportional to 109,906.81, 151,681.48 and 69,077.58

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Solution

The fourth proportional to 109,906.81, 151,681.48 and 69,077.58 is: 95,333.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,906.81 : 151,681.48 = 69,077.58 : x
  2. Step 2: Convert to fraction form
    109,906.81/151,681.48 = 69,077.58/x
  3. Step 3: Cross multiply
    109,906.81x = 151,681.48 × 69,077.58
  4. Step 4: Simplify right side
    109,906.81x = 10,477,789,569.22
  5. Step 5: Solve for x
    x = 10,477,789,569.22/109,906.81
  6. Step 6: Final answer
    x = 95,333.40

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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.