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Finding the Fourth Proportional to 100,039.29, 149,892.33 and 70,394.83

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Solution

The fourth proportional to 100,039.29, 149,892.33 and 70,394.83 is: 105,475.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,039.29 : 149,892.33 = 70,394.83 : x
  2. Step 2: Convert to fraction form
    100,039.29/149,892.33 = 70,394.83/x
  3. Step 3: Cross multiply
    100,039.29x = 149,892.33 × 70,394.83
  4. Step 4: Simplify right side
    100,039.29x = 10,551,645,088.65
  5. Step 5: Solve for x
    x = 10,551,645,088.65/100,039.29
  6. Step 6: Final answer
    x = 105,475.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.