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Finding the Fourth Proportional to 108,477.48, 149,681.12 and 68,162.70

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Solution

The fourth proportional to 108,477.48, 149,681.12 and 68,162.70 is: 94,053.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,477.48 : 149,681.12 = 68,162.70 : x
  2. Step 2: Convert to fraction form
    108,477.48/149,681.12 = 68,162.70/x
  3. Step 3: Cross multiply
    108,477.48x = 149,681.12 × 68,162.70
  4. Step 4: Simplify right side
    108,477.48x = 10,202,668,937.41
  5. Step 5: Solve for x
    x = 10,202,668,937.41/108,477.48
  6. Step 6: Final answer
    x = 94,053.34

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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.