Home / 108,694.47-163,078.17-42,136.77

Finding the Fourth Proportional to 108,694.47, 163,078.17 and 42,136.77

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Solution

The fourth proportional to 108,694.47, 163,078.17 and 42,136.77 is: 63,219.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,694.47 : 163,078.17 = 42,136.77 : x
  2. Step 2: Convert to fraction form
    108,694.47/163,078.17 = 42,136.77/x
  3. Step 3: Cross multiply
    108,694.47x = 163,078.17 × 42,136.77
  4. Step 4: Simplify right side
    108,694.47x = 6,871,587,341.31
  5. Step 5: Solve for x
    x = 6,871,587,341.31/108,694.47
  6. Step 6: Final answer
    x = 63,219.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.