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Finding the Fourth Proportional to 132,820.53, 183,287.01 and 72,389.91

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Solution

The fourth proportional to 132,820.53, 183,287.01 and 72,389.91 is: 99,895.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,820.53 : 183,287.01 = 72,389.91 : x
  2. Step 2: Convert to fraction form
    132,820.53/183,287.01 = 72,389.91/x
  3. Step 3: Cross multiply
    132,820.53x = 183,287.01 × 72,389.91
  4. Step 4: Simplify right side
    132,820.53x = 13,268,130,158.07
  5. Step 5: Solve for x
    x = 13,268,130,158.07/132,820.53
  6. Step 6: Final answer
    x = 99,895.18

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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.