Home / 128,329.15-177,094.62-71,740.52

Finding the Fourth Proportional to 128,329.15, 177,094.62 and 71,740.52

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Solution

The fourth proportional to 128,329.15, 177,094.62 and 71,740.52 is: 99,002.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,329.15 : 177,094.62 = 71,740.52 : x
  2. Step 2: Convert to fraction form
    128,329.15/177,094.62 = 71,740.52/x
  3. Step 3: Cross multiply
    128,329.15x = 177,094.62 × 71,740.52
  4. Step 4: Simplify right side
    128,329.15x = 12,704,860,128.00
  5. Step 5: Solve for x
    x = 12,704,860,128.00/128,329.15
  6. Step 6: Final answer
    x = 99,002.14

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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.