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Finding the Fourth Proportional to 103,019.01, 155,230.53 and 84,709.23

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Solution

The fourth proportional to 103,019.01, 155,230.53 and 84,709.23 is: 127,641.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,019.01 : 155,230.53 = 84,709.23 : x
  2. Step 2: Convert to fraction form
    103,019.01/155,230.53 = 84,709.23/x
  3. Step 3: Cross multiply
    103,019.01x = 155,230.53 × 84,709.23
  4. Step 4: Simplify right side
    103,019.01x = 13,149,458,668.79
  5. Step 5: Solve for x
    x = 13,149,458,668.79/103,019.01
  6. Step 6: Final answer
    x = 127,641.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.