Home / 154,190.52-212,782.14-89,636.76

Finding the Fourth Proportional to 154,190.52, 212,782.14 and 89,636.76

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Solution

The fourth proportional to 154,190.52, 212,782.14 and 89,636.76 is: 123,698.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,190.52 : 212,782.14 = 89,636.76 : x
  2. Step 2: Convert to fraction form
    154,190.52/212,782.14 = 89,636.76/x
  3. Step 3: Cross multiply
    154,190.52x = 212,782.14 × 89,636.76
  4. Step 4: Simplify right side
    154,190.52x = 19,073,101,615.47
  5. Step 5: Solve for x
    x = 19,073,101,615.47/154,190.52
  6. Step 6: Final answer
    x = 123,698.28

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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.