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Finding the Fourth Proportional to 105,197.70, 145,170.51 and 57,451.25

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Solution

The fourth proportional to 105,197.70, 145,170.51 and 57,451.25 is: 79,281.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,197.70 : 145,170.51 = 57,451.25 : x
  2. Step 2: Convert to fraction form
    105,197.70/145,170.51 = 57,451.25/x
  3. Step 3: Cross multiply
    105,197.70x = 145,170.51 × 57,451.25
  4. Step 4: Simplify right side
    105,197.70x = 8,340,226,536.78
  5. Step 5: Solve for x
    x = 8,340,226,536.78/105,197.70
  6. Step 6: Final answer
    x = 79,281.45

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.