Home / 98,288.88-147,438.36-28,178.64

Finding the Fourth Proportional to 98,288.88, 147,438.36 and 28,178.64

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Solution

The fourth proportional to 98,288.88, 147,438.36 and 28,178.64 is: 42,269.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,288.88 : 147,438.36 = 28,178.64 : x
  2. Step 2: Convert to fraction form
    98,288.88/147,438.36 = 28,178.64/x
  3. Step 3: Cross multiply
    98,288.88x = 147,438.36 × 28,178.64
  4. Step 4: Simplify right side
    98,288.88x = 4,154,612,468.63
  5. Step 5: Solve for x
    x = 4,154,612,468.63/98,288.88
  6. Step 6: Final answer
    x = 42,269.40

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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.