Home / 102,014.40-153,021.60-54,775.20

Finding the Fourth Proportional to 102,014.40, 153,021.60 and 54,775.20

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Solution

The fourth proportional to 102,014.40, 153,021.60 and 54,775.20 is: 82,162.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,014.40 : 153,021.60 = 54,775.20 : x
  2. Step 2: Convert to fraction form
    102,014.40/153,021.60 = 54,775.20/x
  3. Step 3: Cross multiply
    102,014.40x = 153,021.60 × 54,775.20
  4. Step 4: Simplify right side
    102,014.40x = 8,381,788,744.32
  5. Step 5: Solve for x
    x = 8,381,788,744.32/102,014.40
  6. Step 6: Final answer
    x = 82,162.80

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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.