Home / 152,102.86-209,909.82-87,581.68

Finding the Fourth Proportional to 152,102.86, 209,909.82 and 87,581.68

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Solution

The fourth proportional to 152,102.86, 209,909.82 and 87,581.68 is: 120,867.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,102.86 : 209,909.82 = 87,581.68 : x
  2. Step 2: Convert to fraction form
    152,102.86/209,909.82 = 87,581.68/x
  3. Step 3: Cross multiply
    152,102.86x = 209,909.82 × 87,581.68
  4. Step 4: Simplify right side
    152,102.86x = 18,384,254,684.10
  5. Step 5: Solve for x
    x = 18,384,254,684.10/152,102.86
  6. Step 6: Final answer
    x = 120,867.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.