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Finding the Fourth Proportional to 108,230.20, 149,403.66 and 65,802.28

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Solution

The fourth proportional to 108,230.20, 149,403.66 and 65,802.28 is: 90,835.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,230.20 : 149,403.66 = 65,802.28 : x
  2. Step 2: Convert to fraction form
    108,230.20/149,403.66 = 65,802.28/x
  3. Step 3: Cross multiply
    108,230.20x = 149,403.66 × 65,802.28
  4. Step 4: Simplify right side
    108,230.20x = 9,831,101,468.34
  5. Step 5: Solve for x
    x = 9,831,101,468.34/108,230.20
  6. Step 6: Final answer
    x = 90,835.10

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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.