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Finding the Fourth Proportional to 108,681.59, 149,904.73 and 105,023.81

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Solution

The fourth proportional to 108,681.59, 149,904.73 and 105,023.81 is: 144,859.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,681.59 : 149,904.73 = 105,023.81 : x
  2. Step 2: Convert to fraction form
    108,681.59/149,904.73 = 105,023.81/x
  3. Step 3: Cross multiply
    108,681.59x = 149,904.73 × 105,023.81
  4. Step 4: Simplify right side
    108,681.59x = 15,743,565,881.62
  5. Step 5: Solve for x
    x = 15,743,565,881.62/108,681.59
  6. Step 6: Final answer
    x = 144,859.55

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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.