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Finding the Fourth Proportional to 100,039.68, 149,892.93 and 70,395.23

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Solution

The fourth proportional to 100,039.68, 149,892.93 and 70,395.23 is: 105,475.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,039.68 : 149,892.93 = 70,395.23 : x
  2. Step 2: Convert to fraction form
    100,039.68/149,892.93 = 70,395.23/x
  3. Step 3: Cross multiply
    100,039.68x = 149,892.93 × 70,395.23
  4. Step 4: Simplify right side
    100,039.68x = 10,551,747,657.46
  5. Step 5: Solve for x
    x = 10,551,747,657.46/100,039.68
  6. Step 6: Final answer
    x = 105,475.62

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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.