Home / 103,014.48-142,126.68-57,685.68

Finding the Fourth Proportional to 103,014.48, 142,126.68 and 57,685.68

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Solution

The fourth proportional to 103,014.48, 142,126.68 and 57,685.68 is: 79,587.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,014.48 : 142,126.68 = 57,685.68 : x
  2. Step 2: Convert to fraction form
    103,014.48/142,126.68 = 57,685.68/x
  3. Step 3: Cross multiply
    103,014.48x = 142,126.68 × 57,685.68
  4. Step 4: Simplify right side
    103,014.48x = 8,198,674,181.94
  5. Step 5: Solve for x
    x = 8,198,674,181.94/103,014.48
  6. Step 6: Final answer
    x = 79,587.59

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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.