Home / 135,490.32-203,176.64-72,296.36

Finding the Fourth Proportional to 135,490.32, 203,176.64 and 72,296.36

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Solution

The fourth proportional to 135,490.32, 203,176.64 and 72,296.36 is: 108,413.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,490.32 : 203,176.64 = 72,296.36 : x
  2. Step 2: Convert to fraction form
    135,490.32/203,176.64 = 72,296.36/x
  3. Step 3: Cross multiply
    135,490.32x = 203,176.64 × 72,296.36
  4. Step 4: Simplify right side
    135,490.32x = 14,688,931,509.03
  5. Step 5: Solve for x
    x = 14,688,931,509.03/135,490.32
  6. Step 6: Final answer
    x = 108,413.14

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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.