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Finding the Fourth Proportional to 128,151.46, 176,863.93 and 106,603.10

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Solution

The fourth proportional to 128,151.46, 176,863.93 and 106,603.10 is: 147,124.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,151.46 : 176,863.93 = 106,603.10 : x
  2. Step 2: Convert to fraction form
    128,151.46/176,863.93 = 106,603.10/x
  3. Step 3: Cross multiply
    128,151.46x = 176,863.93 × 106,603.10
  4. Step 4: Simplify right side
    128,151.46x = 18,854,242,065.36
  5. Step 5: Solve for x
    x = 18,854,242,065.36/128,151.46
  6. Step 6: Final answer
    x = 147,124.68

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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.