Home / 132,688.95-183,108-72,260.65

Finding the Fourth Proportional to 132,688.95, 183,108 and 72,260.65

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Solution

The fourth proportional to 132,688.95, 183,108 and 72,260.65 is: 99,718.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,688.95 : 183,108 = 72,260.65 : x
  2. Step 2: Convert to fraction form
    132,688.95/183,108 = 72,260.65/x
  3. Step 3: Cross multiply
    132,688.95x = 183,108 × 72,260.65
  4. Step 4: Simplify right side
    132,688.95x = 13,231,503,100.20
  5. Step 5: Solve for x
    x = 13,231,503,100.20/132,688.95
  6. Step 6: Final answer
    x = 99,718.20

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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.