Home / 103,423.14-142,778.43-69,609.42

Finding the Fourth Proportional to 103,423.14, 142,778.43 and 69,609.42

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Solution

The fourth proportional to 103,423.14, 142,778.43 and 69,609.42 is: 96,097.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,423.14 : 142,778.43 = 69,609.42 : x
  2. Step 2: Convert to fraction form
    103,423.14/142,778.43 = 69,609.42/x
  3. Step 3: Cross multiply
    103,423.14x = 142,778.43 × 69,609.42
  4. Step 4: Simplify right side
    103,423.14x = 9,938,723,700.81
  5. Step 5: Solve for x
    x = 9,938,723,700.81/103,423.14
  6. Step 6: Final answer
    x = 96,097.68

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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.