Home / 99,435.60-149,023.80-46,121.40

Finding the Fourth Proportional to 99,435.60, 149,023.80 and 46,121.40

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Solution

The fourth proportional to 99,435.60, 149,023.80 and 46,121.40 is: 69,121.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,435.60 : 149,023.80 = 46,121.40 : x
  2. Step 2: Convert to fraction form
    99,435.60/149,023.80 = 46,121.40/x
  3. Step 3: Cross multiply
    99,435.60x = 149,023.80 × 46,121.40
  4. Step 4: Simplify right side
    99,435.60x = 6,873,186,289.32
  5. Step 5: Solve for x
    x = 6,873,186,289.32/99,435.60
  6. Step 6: Final answer
    x = 69,121.99

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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.