Home / 105,763.18-158,785.56-61,421.75

Finding the Fourth Proportional to 105,763.18, 158,785.56 and 61,421.75

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Solution

The fourth proportional to 105,763.18, 158,785.56 and 61,421.75 is: 92,214.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,763.18 : 158,785.56 = 61,421.75 : x
  2. Step 2: Convert to fraction form
    105,763.18/158,785.56 = 61,421.75/x
  3. Step 3: Cross multiply
    105,763.18x = 158,785.56 × 61,421.75
  4. Step 4: Simplify right side
    105,763.18x = 9,752,886,969.93
  5. Step 5: Solve for x
    x = 9,752,886,969.93/105,763.18
  6. Step 6: Final answer
    x = 92,214.39

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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.