Home / 141,931.86-212,910.09-51,999

Finding the Fourth Proportional to 141,931.86, 212,910.09 and 51,999

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Solution

The fourth proportional to 141,931.86, 212,910.09 and 51,999 is: 78,003.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,931.86 : 212,910.09 = 51,999 : x
  2. Step 2: Convert to fraction form
    141,931.86/212,910.09 = 51,999/x
  3. Step 3: Cross multiply
    141,931.86x = 212,910.09 × 51,999
  4. Step 4: Simplify right side
    141,931.86x = 11,071,111,769.91
  5. Step 5: Solve for x
    x = 11,071,111,769.91/141,931.86
  6. Step 6: Final answer
    x = 78,003.01

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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.