Home / 102,289.20-153,464.78-79,877.31

Finding the Fourth Proportional to 102,289.20, 153,464.78 and 79,877.31

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Solution

The fourth proportional to 102,289.20, 153,464.78 and 79,877.31 is: 119,840.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,289.20 : 153,464.78 = 79,877.31 : x
  2. Step 2: Convert to fraction form
    102,289.20/153,464.78 = 79,877.31/x
  3. Step 3: Cross multiply
    102,289.20x = 153,464.78 × 79,877.31
  4. Step 4: Simplify right side
    102,289.20x = 12,258,354,005.84
  5. Step 5: Solve for x
    x = 12,258,354,005.84/102,289.20
  6. Step 6: Final answer
    x = 119,840.16

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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.