Home / 132,809.54-183,271.77-72,378.90

Finding the Fourth Proportional to 132,809.54, 183,271.77 and 72,378.90

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Solution

The fourth proportional to 132,809.54, 183,271.77 and 72,378.90 is: 99,879.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,809.54 : 183,271.77 = 72,378.90 : x
  2. Step 2: Convert to fraction form
    132,809.54/183,271.77 = 72,378.90/x
  3. Step 3: Cross multiply
    132,809.54x = 183,271.77 × 72,378.90
  4. Step 4: Simplify right side
    132,809.54x = 13,265,009,113.65
  5. Step 5: Solve for x
    x = 13,265,009,113.65/132,809.54
  6. Step 6: Final answer
    x = 99,879.95

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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.