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Finding the Fourth Proportional to 108,407.16, 149,662.08 and 74,435.76

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Solution

The fourth proportional to 108,407.16, 149,662.08 and 74,435.76 is: 102,762.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,407.16 : 149,662.08 = 74,435.76 : x
  2. Step 2: Convert to fraction form
    108,407.16/149,662.08 = 74,435.76/x
  3. Step 3: Cross multiply
    108,407.16x = 149,662.08 × 74,435.76
  4. Step 4: Simplify right side
    108,407.16x = 11,140,210,667.98
  5. Step 5: Solve for x
    x = 11,140,210,667.98/108,407.16
  6. Step 6: Final answer
    x = 102,762.68

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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.