Home / 210,220.52-315,143.24-77,069.69

Finding the Fourth Proportional to 210,220.52, 315,143.24 and 77,069.69

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Solution

The fourth proportional to 210,220.52, 315,143.24 and 77,069.69 is: 115,535.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,220.52 : 315,143.24 = 77,069.69 : x
  2. Step 2: Convert to fraction form
    210,220.52/315,143.24 = 77,069.69/x
  3. Step 3: Cross multiply
    210,220.52x = 315,143.24 × 77,069.69
  4. Step 4: Simplify right side
    210,220.52x = 24,287,991,812.40
  5. Step 5: Solve for x
    x = 24,287,991,812.40/210,220.52
  6. Step 6: Final answer
    x = 115,535.78

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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.