Home / 132,904.84-183,413.09-72,478.78

Finding the Fourth Proportional to 132,904.84, 183,413.09 and 72,478.78

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Solution

The fourth proportional to 132,904.84, 183,413.09 and 72,478.78 is: 100,023.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,904.84 : 183,413.09 = 72,478.78 : x
  2. Step 2: Convert to fraction form
    132,904.84/183,413.09 = 72,478.78/x
  3. Step 3: Cross multiply
    132,904.84x = 183,413.09 × 72,478.78
  4. Step 4: Simplify right side
    132,904.84x = 13,293,555,719.77
  5. Step 5: Solve for x
    x = 13,293,555,719.77/132,904.84
  6. Step 6: Final answer
    x = 100,023.12

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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.