Home / 128,184.78-176,896.55-70,823.87

Finding the Fourth Proportional to 128,184.78, 176,896.55 and 70,823.87

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Solution

The fourth proportional to 128,184.78, 176,896.55 and 70,823.87 is: 97,737.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,184.78 : 176,896.55 = 70,823.87 : x
  2. Step 2: Convert to fraction form
    128,184.78/176,896.55 = 70,823.87/x
  3. Step 3: Cross multiply
    128,184.78x = 176,896.55 × 70,823.87
  4. Step 4: Simplify right side
    128,184.78x = 12,528,497,022.05
  5. Step 5: Solve for x
    x = 12,528,497,022.05/128,184.78
  6. Step 6: Final answer
    x = 97,737.79

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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.