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Finding the Fourth Proportional to 143,892.06, 215,900.40 and 77,254.44

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Solution

The fourth proportional to 143,892.06, 215,900.40 and 77,254.44 is: 115,915.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,892.06 : 215,900.40 = 77,254.44 : x
  2. Step 2: Convert to fraction form
    143,892.06/215,900.40 = 77,254.44/x
  3. Step 3: Cross multiply
    143,892.06x = 215,900.40 × 77,254.44
  4. Step 4: Simplify right side
    143,892.06x = 16,679,264,497.78
  5. Step 5: Solve for x
    x = 16,679,264,497.78/143,892.06
  6. Step 6: Final answer
    x = 115,915.11

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1.5x scale

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.