Home / 157,712.51-217,634.95-86,078.63

Finding the Fourth Proportional to 157,712.51, 217,634.95 and 86,078.63

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Solution

The fourth proportional to 157,712.51, 217,634.95 and 86,078.63 is: 118,783.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,712.51 : 217,634.95 = 86,078.63 : x
  2. Step 2: Convert to fraction form
    157,712.51/217,634.95 = 86,078.63/x
  3. Step 3: Cross multiply
    157,712.51x = 217,634.95 × 86,078.63
  4. Step 4: Simplify right side
    157,712.51x = 18,733,718,336.12
  5. Step 5: Solve for x
    x = 18,733,718,336.12/157,712.51
  6. Step 6: Final answer
    x = 118,783.97

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1.5x scale

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.