Home / 128,159.96-192,238.74-42,777.23

Finding the Fourth Proportional to 128,159.96, 192,238.74 and 42,777.23

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Solution

The fourth proportional to 128,159.96, 192,238.74 and 42,777.23 is: 64,165.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,159.96 : 192,238.74 = 42,777.23 : x
  2. Step 2: Convert to fraction form
    128,159.96/192,238.74 = 42,777.23/x
  3. Step 3: Cross multiply
    128,159.96x = 192,238.74 × 42,777.23
  4. Step 4: Simplify right side
    128,159.96x = 8,223,439,834.70
  5. Step 5: Solve for x
    x = 8,223,439,834.70/128,159.96
  6. Step 6: Final answer
    x = 64,165.44

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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.