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Finding the Fourth Proportional to 134,745.92, 185,950.80 and 74,319.20

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Solution

The fourth proportional to 134,745.92, 185,950.80 and 74,319.20 is: 102,561.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,745.92 : 185,950.80 = 74,319.20 : x
  2. Step 2: Convert to fraction form
    134,745.92/185,950.80 = 74,319.20/x
  3. Step 3: Cross multiply
    134,745.92x = 185,950.80 × 74,319.20
  4. Step 4: Simplify right side
    134,745.92x = 13,819,714,695.36
  5. Step 5: Solve for x
    x = 13,819,714,695.36/134,745.92
  6. Step 6: Final answer
    x = 102,561.28

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1.5x scale

Why These Related Problems?

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