Home / 128,878.08-193,308.48-35,376

Finding the Fourth Proportional to 128,878.08, 193,308.48 and 35,376

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Solution

The fourth proportional to 128,878.08, 193,308.48 and 35,376 is: 53,061.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,878.08 : 193,308.48 = 35,376 : x
  2. Step 2: Convert to fraction form
    128,878.08/193,308.48 = 35,376/x
  3. Step 3: Cross multiply
    128,878.08x = 193,308.48 × 35,376
  4. Step 4: Simplify right side
    128,878.08x = 6,838,480,788.48
  5. Step 5: Solve for x
    x = 6,838,480,788.48/128,878.08
  6. Step 6: Final answer
    x = 53,061.63

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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.