Home / 103,769.10-155,554.02-66,223.17

Finding the Fourth Proportional to 103,769.10, 155,554.02 and 66,223.17

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Solution

The fourth proportional to 103,769.10, 155,554.02 and 66,223.17 is: 99,271.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,769.10 : 155,554.02 = 66,223.17 : x
  2. Step 2: Convert to fraction form
    103,769.10/155,554.02 = 66,223.17/x
  3. Step 3: Cross multiply
    103,769.10x = 155,554.02 × 66,223.17
  4. Step 4: Simplify right side
    103,769.10x = 10,301,280,310.64
  5. Step 5: Solve for x
    x = 10,301,280,310.64/103,769.10
  6. Step 6: Final answer
    x = 99,271.17

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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.