Home / 103,636.86-155,538.18-53,731.14

Finding the Fourth Proportional to 103,636.86, 155,538.18 and 53,731.14

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Solution

The fourth proportional to 103,636.86, 155,538.18 and 53,731.14 is: 80,639.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,636.86 : 155,538.18 = 53,731.14 : x
  2. Step 2: Convert to fraction form
    103,636.86/155,538.18 = 53,731.14/x
  3. Step 3: Cross multiply
    103,636.86x = 155,538.18 × 53,731.14
  4. Step 4: Simplify right side
    103,636.86x = 8,357,243,724.93
  5. Step 5: Solve for x
    x = 8,357,243,724.93/103,636.86
  6. Step 6: Final answer
    x = 80,639.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.