Home / 147,137.79-203,111.18-99,455.73

Finding the Fourth Proportional to 147,137.79, 203,111.18 and 99,455.73

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Solution

The fourth proportional to 147,137.79, 203,111.18 and 99,455.73 is: 137,290.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,137.79 : 203,111.18 = 99,455.73 : x
  2. Step 2: Convert to fraction form
    147,137.79/203,111.18 = 99,455.73/x
  3. Step 3: Cross multiply
    147,137.79x = 203,111.18 × 99,455.73
  4. Step 4: Simplify right side
    147,137.79x = 20,200,570,180.78
  5. Step 5: Solve for x
    x = 20,200,570,180.78/147,137.79
  6. Step 6: Final answer
    x = 137,290.16

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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.