Home / 128,930.86-193,537.72-102,447.10

Finding the Fourth Proportional to 128,930.86, 193,537.72 and 102,447.10

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Solution

The fourth proportional to 128,930.86, 193,537.72 and 102,447.10 is: 153,783.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,930.86 : 193,537.72 = 102,447.10 : x
  2. Step 2: Convert to fraction form
    128,930.86/193,537.72 = 102,447.10/x
  3. Step 3: Cross multiply
    128,930.86x = 193,537.72 × 102,447.10
  4. Step 4: Simplify right side
    128,930.86x = 19,827,378,154.61
  5. Step 5: Solve for x
    x = 19,827,378,154.61/128,930.86
  6. Step 6: Final answer
    x = 153,783.03

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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.