Home / 102,657.38-153,986.46-31,579.53

Finding the Fourth Proportional to 102,657.38, 153,986.46 and 31,579.53

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Solution

The fourth proportional to 102,657.38, 153,986.46 and 31,579.53 is: 47,369.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,657.38 : 153,986.46 = 31,579.53 : x
  2. Step 2: Convert to fraction form
    102,657.38/153,986.46 = 31,579.53/x
  3. Step 3: Cross multiply
    102,657.38x = 153,986.46 × 31,579.53
  4. Step 4: Simplify right side
    102,657.38x = 4,862,819,779.02
  5. Step 5: Solve for x
    x = 4,862,819,779.02/102,657.38
  6. Step 6: Final answer
    x = 47,369.41

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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.