Home / 128,421.30-192,502.35-58,350.90

Finding the Fourth Proportional to 128,421.30, 192,502.35 and 58,350.90

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Solution

The fourth proportional to 128,421.30, 192,502.35 and 58,350.90 is: 87,467.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,421.30 : 192,502.35 = 58,350.90 : x
  2. Step 2: Convert to fraction form
    128,421.30/192,502.35 = 58,350.90/x
  3. Step 3: Cross multiply
    128,421.30x = 192,502.35 × 58,350.90
  4. Step 4: Simplify right side
    128,421.30x = 11,232,685,374.62
  5. Step 5: Solve for x
    x = 11,232,685,374.62/128,421.30
  6. Step 6: Final answer
    x = 87,467.46

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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.