Home / 102,342.30-153,628.65-79,071.90

Finding the Fourth Proportional to 102,342.30, 153,628.65 and 79,071.90

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Solution

The fourth proportional to 102,342.30, 153,628.65 and 79,071.90 is: 118,696.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,342.30 : 153,628.65 = 79,071.90 : x
  2. Step 2: Convert to fraction form
    102,342.30/153,628.65 = 79,071.90/x
  3. Step 3: Cross multiply
    102,342.30x = 153,628.65 × 79,071.90
  4. Step 4: Simplify right side
    102,342.30x = 12,147,709,249.94
  5. Step 5: Solve for x
    x = 12,147,709,249.94/102,342.30
  6. Step 6: Final answer
    x = 118,696.86

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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.