Home / 210,240.72-315,402.62-77,122.13

Finding the Fourth Proportional to 210,240.72, 315,402.62 and 77,122.13

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Solution

The fourth proportional to 210,240.72, 315,402.62 and 77,122.13 is: 115,698.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,240.72 : 315,402.62 = 77,122.13 : x
  2. Step 2: Convert to fraction form
    210,240.72/315,402.62 = 77,122.13/x
  3. Step 3: Cross multiply
    210,240.72x = 315,402.62 × 77,122.13
  4. Step 4: Simplify right side
    210,240.72x = 24,324,521,476.37
  5. Step 5: Solve for x
    x = 24,324,521,476.37/210,240.72
  6. Step 6: Final answer
    x = 115,698.43

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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.