Home / 210,256.84-315,426.75-77,138.20

Finding the Fourth Proportional to 210,256.84, 315,426.75 and 77,138.20

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Solution

The fourth proportional to 210,256.84, 315,426.75 and 77,138.20 is: 115,722.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,256.84 : 315,426.75 = 77,138.20 : x
  2. Step 2: Convert to fraction form
    210,256.84/315,426.75 = 77,138.20/x
  3. Step 3: Cross multiply
    210,256.84x = 315,426.75 × 77,138.20
  4. Step 4: Simplify right side
    210,256.84x = 24,331,451,726.85
  5. Step 5: Solve for x
    x = 24,331,451,726.85/210,256.84
  6. Step 6: Final answer
    x = 115,722.52

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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.