Home / 128,981.61-193,547.13-54,095.08

Finding the Fourth Proportional to 128,981.61, 193,547.13 and 54,095.08

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Solution

The fourth proportional to 128,981.61, 193,547.13 and 54,095.08 is: 81,173.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,981.61 : 193,547.13 = 54,095.08 : x
  2. Step 2: Convert to fraction form
    128,981.61/193,547.13 = 54,095.08/x
  3. Step 3: Cross multiply
    128,981.61x = 193,547.13 × 54,095.08
  4. Step 4: Simplify right side
    128,981.61x = 10,469,947,481.12
  5. Step 5: Solve for x
    x = 10,469,947,481.12/128,981.61
  6. Step 6: Final answer
    x = 81,173.96

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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.