Home / 147,135.79-203,108.41-99,453.72

Finding the Fourth Proportional to 147,135.79, 203,108.41 and 99,453.72

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Solution

The fourth proportional to 147,135.79, 203,108.41 and 99,453.72 is: 137,287.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,135.79 : 203,108.41 = 99,453.72 : x
  2. Step 2: Convert to fraction form
    147,135.79/203,108.41 = 99,453.72/x
  3. Step 3: Cross multiply
    147,135.79x = 203,108.41 × 99,453.72
  4. Step 4: Simplify right side
    147,135.79x = 20,199,886,937.79
  5. Step 5: Solve for x
    x = 20,199,886,937.79/147,135.79
  6. Step 6: Final answer
    x = 137,287.38

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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.