Home / 219,726.72-303,234.48-139,124.88

Finding the Fourth Proportional to 219,726.72, 303,234.48 and 139,124.88

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Solution

The fourth proportional to 219,726.72, 303,234.48 and 139,124.88 is: 191,999.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,726.72 : 303,234.48 = 139,124.88 : x
  2. Step 2: Convert to fraction form
    219,726.72/303,234.48 = 139,124.88/x
  3. Step 3: Cross multiply
    219,726.72x = 303,234.48 × 139,124.88
  4. Step 4: Simplify right side
    219,726.72x = 42,187,460,641.86
  5. Step 5: Solve for x
    x = 42,187,460,641.86/219,726.72
  6. Step 6: Final answer
    x = 191,999.68

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1.5x scale

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.