Home / 113,738.78-156,983.47-77,975.87

Finding the Fourth Proportional to 113,738.78, 156,983.47 and 77,975.87

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Solution

The fourth proportional to 113,738.78, 156,983.47 and 77,975.87 is: 107,623.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,738.78 : 156,983.47 = 77,975.87 : x
  2. Step 2: Convert to fraction form
    113,738.78/156,983.47 = 77,975.87/x
  3. Step 3: Cross multiply
    113,738.78x = 156,983.47 × 77,975.87
  4. Step 4: Simplify right side
    113,738.78x = 12,240,921,669.01
  5. Step 5: Solve for x
    x = 12,240,921,669.01/113,738.78
  6. Step 6: Final answer
    x = 107,623.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.