Home / 98,054.72-147,028.32-45,435.20

Finding the Fourth Proportional to 98,054.72, 147,028.32 and 45,435.20

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Solution

The fourth proportional to 98,054.72, 147,028.32 and 45,435.20 is: 68,127.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,054.72 : 147,028.32 = 45,435.20 : x
  2. Step 2: Convert to fraction form
    98,054.72/147,028.32 = 45,435.20/x
  3. Step 3: Cross multiply
    98,054.72x = 147,028.32 × 45,435.20
  4. Step 4: Simplify right side
    98,054.72x = 6,680,261,124.86
  5. Step 5: Solve for x
    x = 6,680,261,124.86/98,054.72
  6. Step 6: Final answer
    x = 68,127.89

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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.