Home / 128,238.05-176,963.01-70,874.41

Finding the Fourth Proportional to 128,238.05, 176,963.01 and 70,874.41

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Solution

The fourth proportional to 128,238.05, 176,963.01 and 70,874.41 is: 97,803.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,238.05 : 176,963.01 = 70,874.41 : x
  2. Step 2: Convert to fraction form
    128,238.05/176,963.01 = 70,874.41/x
  3. Step 3: Cross multiply
    128,238.05x = 176,963.01 × 70,874.41
  4. Step 4: Simplify right side
    128,238.05x = 12,542,148,925.57
  5. Step 5: Solve for x
    x = 12,542,148,925.57/128,238.05
  6. Step 6: Final answer
    x = 97,803.65

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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.