Home / 132,820.78-183,287.36-72,390.16

Finding the Fourth Proportional to 132,820.78, 183,287.36 and 72,390.16

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Solution

The fourth proportional to 132,820.78, 183,287.36 and 72,390.16 is: 99,895.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,820.78 : 183,287.36 = 72,390.16 : x
  2. Step 2: Convert to fraction form
    132,820.78/183,287.36 = 72,390.16/x
  3. Step 3: Cross multiply
    132,820.78x = 183,287.36 × 72,390.16
  4. Step 4: Simplify right side
    132,820.78x = 13,268,200,037.99
  5. Step 5: Solve for x
    x = 13,268,200,037.99/132,820.78
  6. Step 6: Final answer
    x = 99,895.52

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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.