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Finding the Fourth Proportional to 108,465.80, 149,681.66 and 60,719.54

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Solution

The fourth proportional to 108,465.80, 149,681.66 and 60,719.54 is: 83,792.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,465.80 : 149,681.66 = 60,719.54 : x
  2. Step 2: Convert to fraction form
    108,465.80/149,681.66 = 60,719.54/x
  3. Step 3: Cross multiply
    108,465.80x = 149,681.66 × 60,719.54
  4. Step 4: Simplify right side
    108,465.80x = 9,088,600,489.63
  5. Step 5: Solve for x
    x = 9,088,600,489.63/108,465.80
  6. Step 6: Final answer
    x = 83,792.32

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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.