Home / 103,559.55-142,913.01-57,619.86

Finding the Fourth Proportional to 103,559.55, 142,913.01 and 57,619.86

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Solution

The fourth proportional to 103,559.55, 142,913.01 and 57,619.86 is: 79,515.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,559.55 : 142,913.01 = 57,619.86 : x
  2. Step 2: Convert to fraction form
    103,559.55/142,913.01 = 57,619.86/x
  3. Step 3: Cross multiply
    103,559.55x = 142,913.01 × 57,619.86
  4. Step 4: Simplify right side
    103,559.55x = 8,234,627,628.38
  5. Step 5: Solve for x
    x = 8,234,627,628.38/103,559.55
  6. Step 6: Final answer
    x = 79,515.87

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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.