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Finding the Fourth Proportional to 107,958.49, 149,056.10 and 69,810.32

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Solution

The fourth proportional to 107,958.49, 149,056.10 and 69,810.32 is: 96,385.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,958.49 : 149,056.10 = 69,810.32 : x
  2. Step 2: Convert to fraction form
    107,958.49/149,056.10 = 69,810.32/x
  3. Step 3: Cross multiply
    107,958.49x = 149,056.10 × 69,810.32
  4. Step 4: Simplify right side
    107,958.49x = 10,405,654,038.95
  5. Step 5: Solve for x
    x = 10,405,654,038.95/107,958.49
  6. Step 6: Final answer
    x = 96,385.69

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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.