Home / 107,217.81-147,967.20-61,904.07

Finding the Fourth Proportional to 107,217.81, 147,967.20 and 61,904.07

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Solution

The fourth proportional to 107,217.81, 147,967.20 and 61,904.07 is: 85,431.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,217.81 : 147,967.20 = 61,904.07 : x
  2. Step 2: Convert to fraction form
    107,217.81/147,967.20 = 61,904.07/x
  3. Step 3: Cross multiply
    107,217.81x = 147,967.20 × 61,904.07
  4. Step 4: Simplify right side
    107,217.81x = 9,159,771,906.50
  5. Step 5: Solve for x
    x = 9,159,771,906.50/107,217.81
  6. Step 6: Final answer
    x = 85,431.44

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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.