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Finding the Fourth Proportional to 178,428.64, 267,643.12 and 60,090

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Solution

The fourth proportional to 178,428.64, 267,643.12 and 60,090 is: 90,135.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,428.64 : 267,643.12 = 60,090 : x
  2. Step 2: Convert to fraction form
    178,428.64/267,643.12 = 60,090/x
  3. Step 3: Cross multiply
    178,428.64x = 267,643.12 × 60,090
  4. Step 4: Simplify right side
    178,428.64x = 16,082,675,080.80
  5. Step 5: Solve for x
    x = 16,082,675,080.80/178,428.64
  6. Step 6: Final answer
    x = 90,135.05

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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.