Home / 141,677.78-195,516.79-78,021.50

Finding the Fourth Proportional to 141,677.78, 195,516.79 and 78,021.50

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Solution

The fourth proportional to 141,677.78, 195,516.79 and 78,021.50 is: 107,670.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,677.78 : 195,516.79 = 78,021.50 : x
  2. Step 2: Convert to fraction form
    141,677.78/195,516.79 = 78,021.50/x
  3. Step 3: Cross multiply
    141,677.78x = 195,516.79 × 78,021.50
  4. Step 4: Simplify right side
    141,677.78x = 15,254,512,058.35
  5. Step 5: Solve for x
    x = 15,254,512,058.35/141,677.78
  6. Step 6: Final answer
    x = 107,670.47

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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.