Home / 103,519.04-142,900.62-71,298.86

Finding the Fourth Proportional to 103,519.04, 142,900.62 and 71,298.86

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Solution

The fourth proportional to 103,519.04, 142,900.62 and 71,298.86 is: 98,422.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,519.04 : 142,900.62 = 71,298.86 : x
  2. Step 2: Convert to fraction form
    103,519.04/142,900.62 = 71,298.86/x
  3. Step 3: Cross multiply
    103,519.04x = 142,900.62 × 71,298.86
  4. Step 4: Simplify right side
    103,519.04x = 10,188,651,299.29
  5. Step 5: Solve for x
    x = 10,188,651,299.29/103,519.04
  6. Step 6: Final answer
    x = 98,422.97

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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.