Home / 103,743.80-143,164.56-58,421.60

Finding the Fourth Proportional to 103,743.80, 143,164.56 and 58,421.60

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Solution

The fourth proportional to 103,743.80, 143,164.56 and 58,421.60 is: 80,620.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,743.80 : 143,164.56 = 58,421.60 : x
  2. Step 2: Convert to fraction form
    103,743.80/143,164.56 = 58,421.60/x
  3. Step 3: Cross multiply
    103,743.80x = 143,164.56 × 58,421.60
  4. Step 4: Simplify right side
    103,743.80x = 8,363,902,658.50
  5. Step 5: Solve for x
    x = 8,363,902,658.50/103,743.80
  6. Step 6: Final answer
    x = 80,620.75

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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.