Home / 210,251.07-315,189.05-77,100.21

Finding the Fourth Proportional to 210,251.07, 315,189.05 and 77,100.21

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Solution

The fourth proportional to 210,251.07, 315,189.05 and 77,100.21 is: 115,581.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,251.07 : 315,189.05 = 77,100.21 : x
  2. Step 2: Convert to fraction form
    210,251.07/315,189.05 = 77,100.21/x
  3. Step 3: Cross multiply
    210,251.07x = 315,189.05 × 77,100.21
  4. Step 4: Simplify right side
    210,251.07x = 24,301,141,559.20
  5. Step 5: Solve for x
    x = 24,301,141,559.20/210,251.07
  6. Step 6: Final answer
    x = 115,581.54

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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.