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Finding the Fourth Proportional to 113,745.60, 170,400.80 and 61,137.60

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Solution

The fourth proportional to 113,745.60, 170,400.80 and 61,137.60 is: 91,589.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,745.60 : 170,400.80 = 61,137.60 : x
  2. Step 2: Convert to fraction form
    113,745.60/170,400.80 = 61,137.60/x
  3. Step 3: Cross multiply
    113,745.60x = 170,400.80 × 61,137.60
  4. Step 4: Simplify right side
    113,745.60x = 10,417,895,950.08
  5. Step 5: Solve for x
    x = 10,417,895,950.08/113,745.60
  6. Step 6: Final answer
    x = 91,589.44

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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.