Home / 103,005.42-142,154.62-57,687.14

Finding the Fourth Proportional to 103,005.42, 142,154.62 and 57,687.14

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Solution

The fourth proportional to 103,005.42, 142,154.62 and 57,687.14 is: 79,612.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,005.42 : 142,154.62 = 57,687.14 : x
  2. Step 2: Convert to fraction form
    103,005.42/142,154.62 = 57,687.14/x
  3. Step 3: Cross multiply
    103,005.42x = 142,154.62 × 57,687.14
  4. Step 4: Simplify right side
    103,005.42x = 8,200,493,465.59
  5. Step 5: Solve for x
    x = 8,200,493,465.59/103,005.42
  6. Step 6: Final answer
    x = 79,612.25

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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.