Home / 105,103.08-145,045.33-57,359.50

Finding the Fourth Proportional to 105,103.08, 145,045.33 and 57,359.50

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Solution

The fourth proportional to 105,103.08, 145,045.33 and 57,359.50 is: 79,157.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,103.08 : 145,045.33 = 57,359.50 : x
  2. Step 2: Convert to fraction form
    105,103.08/145,045.33 = 57,359.50/x
  3. Step 3: Cross multiply
    105,103.08x = 145,045.33 × 57,359.50
  4. Step 4: Simplify right side
    105,103.08x = 8,319,727,606.14
  5. Step 5: Solve for x
    x = 8,319,727,606.14/105,103.08
  6. Step 6: Final answer
    x = 79,157.79

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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.