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Finding the Fourth Proportional to 108,105.36, 149,210.28 and 63,407.76

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Solution

The fourth proportional to 108,105.36, 149,210.28 and 63,407.76 is: 87,517.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,105.36 : 149,210.28 = 63,407.76 : x
  2. Step 2: Convert to fraction form
    108,105.36/149,210.28 = 63,407.76/x
  3. Step 3: Cross multiply
    108,105.36x = 149,210.28 × 63,407.76
  4. Step 4: Simplify right side
    108,105.36x = 9,461,089,623.77
  5. Step 5: Solve for x
    x = 9,461,089,623.77/108,105.36
  6. Step 6: Final answer
    x = 87,517.30

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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.