Home / 103,519.07-142,861.38-58,211.31

Finding the Fourth Proportional to 103,519.07, 142,861.38 and 58,211.31

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Solution

The fourth proportional to 103,519.07, 142,861.38 and 58,211.31 is: 80,334.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,519.07 : 142,861.38 = 58,211.31 : x
  2. Step 2: Convert to fraction form
    103,519.07/142,861.38 = 58,211.31/x
  3. Step 3: Cross multiply
    103,519.07x = 142,861.38 × 58,211.31
  4. Step 4: Simplify right side
    103,519.07x = 8,316,148,078.21
  5. Step 5: Solve for x
    x = 8,316,148,078.21/103,519.07
  6. Step 6: Final answer
    x = 80,334.46

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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.