Home / 128,257.32-192,393.91-42,875.86

Finding the Fourth Proportional to 128,257.32, 192,393.91 and 42,875.86

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Solution

The fourth proportional to 128,257.32, 192,393.91 and 42,875.86 is: 64,316.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,257.32 : 192,393.91 = 42,875.86 : x
  2. Step 2: Convert to fraction form
    128,257.32/192,393.91 = 42,875.86/x
  3. Step 3: Cross multiply
    128,257.32x = 192,393.91 × 42,875.86
  4. Step 4: Simplify right side
    128,257.32x = 8,249,054,764.69
  5. Step 5: Solve for x
    x = 8,249,054,764.69/128,257.32
  6. Step 6: Final answer
    x = 64,316.44

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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.