Home / 261,178.02-391,801.86-128,062.62

Finding the Fourth Proportional to 261,178.02, 391,801.86 and 128,062.62

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Solution

The fourth proportional to 261,178.02, 391,801.86 and 128,062.62 is: 192,111.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,178.02 : 391,801.86 = 128,062.62 : x
  2. Step 2: Convert to fraction form
    261,178.02/391,801.86 = 128,062.62/x
  3. Step 3: Cross multiply
    261,178.02x = 391,801.86 × 128,062.62
  4. Step 4: Simplify right side
    261,178.02x = 50,175,172,712.47
  5. Step 5: Solve for x
    x = 50,175,172,712.47/261,178.02
  6. Step 6: Final answer
    x = 192,111.01

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1.5x scale

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.