Home / 122,639.31-183,981.78-42,673.95

Finding the Fourth Proportional to 122,639.31, 183,981.78 and 42,673.95

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Solution

The fourth proportional to 122,639.31, 183,981.78 and 42,673.95 is: 64,018.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,639.31 : 183,981.78 = 42,673.95 : x
  2. Step 2: Convert to fraction form
    122,639.31/183,981.78 = 42,673.95/x
  3. Step 3: Cross multiply
    122,639.31x = 183,981.78 × 42,673.95
  4. Step 4: Simplify right side
    122,639.31x = 7,851,229,280.63
  5. Step 5: Solve for x
    x = 7,851,229,280.63/122,639.31
  6. Step 6: Final answer
    x = 64,018.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.