Home / 100,816.07-151,317.50-50,931.20

Finding the Fourth Proportional to 100,816.07, 151,317.50 and 50,931.20

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Solution

The fourth proportional to 100,816.07, 151,317.50 and 50,931.20 is: 76,443.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,816.07 : 151,317.50 = 50,931.20 : x
  2. Step 2: Convert to fraction form
    100,816.07/151,317.50 = 50,931.20/x
  3. Step 3: Cross multiply
    100,816.07x = 151,317.50 × 50,931.20
  4. Step 4: Simplify right side
    100,816.07x = 7,706,781,979.64
  5. Step 5: Solve for x
    x = 7,706,781,979.64/100,816.07
  6. Step 6: Final answer
    x = 76,443.99

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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.