Home / 102,984.28-142,085.28-57,655.60

Finding the Fourth Proportional to 102,984.28, 142,085.28 and 57,655.60

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Solution

The fourth proportional to 102,984.28, 142,085.28 and 57,655.60 is: 79,546.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,984.28 : 142,085.28 = 57,655.60 : x
  2. Step 2: Convert to fraction form
    102,984.28/142,085.28 = 57,655.60/x
  3. Step 3: Cross multiply
    102,984.28x = 142,085.28 × 57,655.60
  4. Step 4: Simplify right side
    102,984.28x = 8,192,012,069.57
  5. Step 5: Solve for x
    x = 8,192,012,069.57/102,984.28
  6. Step 6: Final answer
    x = 79,546.24

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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.