Home / 105,719.50-145,905.87-61,007.50

Finding the Fourth Proportional to 105,719.50, 145,905.87 and 61,007.50

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Solution

The fourth proportional to 105,719.50, 145,905.87 and 61,007.50 is: 84,197.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,719.50 : 145,905.87 = 61,007.50 : x
  2. Step 2: Convert to fraction form
    105,719.50/145,905.87 = 61,007.50/x
  3. Step 3: Cross multiply
    105,719.50x = 145,905.87 × 61,007.50
  4. Step 4: Simplify right side
    105,719.50x = 8,901,352,364.03
  5. Step 5: Solve for x
    x = 8,901,352,364.03/105,719.50
  6. Step 6: Final answer
    x = 84,197.83

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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.