Home / 141,234.61-212,615.47-128,665.15

Finding the Fourth Proportional to 141,234.61, 212,615.47 and 128,665.15

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Solution

The fourth proportional to 141,234.61, 212,615.47 and 128,665.15 is: 193,693.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,234.61 : 212,615.47 = 128,665.15 : x
  2. Step 2: Convert to fraction form
    141,234.61/212,615.47 = 128,665.15/x
  3. Step 3: Cross multiply
    141,234.61x = 212,615.47 × 128,665.15
  4. Step 4: Simplify right side
    141,234.61x = 27,356,201,339.87
  5. Step 5: Solve for x
    x = 27,356,201,339.87/141,234.61
  6. Step 6: Final answer
    x = 193,693.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.