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Finding the Fourth Proportional to 235,572.93, 325,087.29 and 128,143.89

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Solution

The fourth proportional to 235,572.93, 325,087.29 and 128,143.89 is: 176,836.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,572.93 : 325,087.29 = 128,143.89 : x
  2. Step 2: Convert to fraction form
    235,572.93/325,087.29 = 128,143.89/x
  3. Step 3: Cross multiply
    235,572.93x = 325,087.29 × 128,143.89
  4. Step 4: Simplify right side
    235,572.93x = 41,657,949,930.16
  5. Step 5: Solve for x
    x = 41,657,949,930.16/235,572.93
  6. Step 6: Final answer
    x = 176,836.74

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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.