Home / 134,138.45-185,058.01-86,419.63

Finding the Fourth Proportional to 134,138.45, 185,058.01 and 86,419.63

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Solution

The fourth proportional to 134,138.45, 185,058.01 and 86,419.63 is: 119,224.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,138.45 : 185,058.01 = 86,419.63 : x
  2. Step 2: Convert to fraction form
    134,138.45/185,058.01 = 86,419.63/x
  3. Step 3: Cross multiply
    134,138.45x = 185,058.01 × 86,419.63
  4. Step 4: Simplify right side
    134,138.45x = 15,992,644,752.74
  5. Step 5: Solve for x
    x = 15,992,644,752.74/134,138.45
  6. Step 6: Final answer
    x = 119,224.91

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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.