Home / 128,298.47-192,427.49-42,908.68

Finding the Fourth Proportional to 128,298.47, 192,427.49 and 42,908.68

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Solution

The fourth proportional to 128,298.47, 192,427.49 and 42,908.68 is: 64,356.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,298.47 : 192,427.49 = 42,908.68 : x
  2. Step 2: Convert to fraction form
    128,298.47/192,427.49 = 42,908.68/x
  3. Step 3: Cross multiply
    128,298.47x = 192,427.49 × 42,908.68
  4. Step 4: Simplify right side
    128,298.47x = 8,256,808,468.57
  5. Step 5: Solve for x
    x = 8,256,808,468.57/128,298.47
  6. Step 6: Final answer
    x = 64,356.25

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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.