Home / 103,069.30-142,239.70-57,747.64

Finding the Fourth Proportional to 103,069.30, 142,239.70 and 57,747.64

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Solution

The fourth proportional to 103,069.30, 142,239.70 and 57,747.64 is: 79,694.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,069.30 : 142,239.70 = 57,747.64 : x
  2. Step 2: Convert to fraction form
    103,069.30/142,239.70 = 57,747.64/x
  3. Step 3: Cross multiply
    103,069.30x = 142,239.70 × 57,747.64
  4. Step 4: Simplify right side
    103,069.30x = 8,214,006,989.31
  5. Step 5: Solve for x
    x = 8,214,006,989.31/103,069.30
  6. Step 6: Final answer
    x = 79,694.02

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1.5x scale

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.