Home / 105,247.72-145,243.14-57,501.64

Finding the Fourth Proportional to 105,247.72, 145,243.14 and 57,501.64

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Solution

The fourth proportional to 105,247.72, 145,243.14 and 57,501.64 is: 79,352.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,247.72 : 145,243.14 = 57,501.64 : x
  2. Step 2: Convert to fraction form
    105,247.72/145,243.14 = 57,501.64/x
  3. Step 3: Cross multiply
    105,247.72x = 145,243.14 × 57,501.64
  4. Step 4: Simplify right side
    105,247.72x = 8,351,718,748.75
  5. Step 5: Solve for x
    x = 8,351,718,748.75/105,247.72
  6. Step 6: Final answer
    x = 79,352.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.