Home / 128,298.34-192,427.30-42,908.55

Finding the Fourth Proportional to 128,298.34, 192,427.30 and 42,908.55

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Solution

The fourth proportional to 128,298.34, 192,427.30 and 42,908.55 is: 64,356.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,298.34 : 192,427.30 = 42,908.55 : x
  2. Step 2: Convert to fraction form
    128,298.34/192,427.30 = 42,908.55/x
  3. Step 3: Cross multiply
    128,298.34x = 192,427.30 × 42,908.55
  4. Step 4: Simplify right side
    128,298.34x = 8,256,776,396.60
  5. Step 5: Solve for x
    x = 8,256,776,396.60/128,298.34
  6. Step 6: Final answer
    x = 64,356.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.