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Finding the Fourth Proportional to 106,598.40, 159,897.60 and 105,820.80

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Solution

The fourth proportional to 106,598.40, 159,897.60 and 105,820.80 is: 158,731.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,598.40 : 159,897.60 = 105,820.80 : x
  2. Step 2: Convert to fraction form
    106,598.40/159,897.60 = 105,820.80/x
  3. Step 3: Cross multiply
    106,598.40x = 159,897.60 × 105,820.80
  4. Step 4: Simplify right side
    106,598.40x = 16,920,491,950.08
  5. Step 5: Solve for x
    x = 16,920,491,950.08/106,598.40
  6. Step 6: Final answer
    x = 158,731.20

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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.