Home / 109,851.40-164,841.90-39,721.60

Finding the Fourth Proportional to 109,851.40, 164,841.90 and 39,721.60

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Solution

The fourth proportional to 109,851.40, 164,841.90 and 39,721.60 is: 59,605.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,851.40 : 164,841.90 = 39,721.60 : x
  2. Step 2: Convert to fraction form
    109,851.40/164,841.90 = 39,721.60/x
  3. Step 3: Cross multiply
    109,851.40x = 164,841.90 × 39,721.60
  4. Step 4: Simplify right side
    109,851.40x = 6,547,784,015.04
  5. Step 5: Solve for x
    x = 6,547,784,015.04/109,851.40
  6. Step 6: Final answer
    x = 59,605.83

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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.