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Finding the Fourth Proportional to 84,550.78, 126,164.55 and 84,058.70

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Solution

The fourth proportional to 84,550.78, 126,164.55 and 84,058.70 is: 125,430.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,550.78 : 126,164.55 = 84,058.70 : x
  2. Step 2: Convert to fraction form
    84,550.78/126,164.55 = 84,058.70/x
  3. Step 3: Cross multiply
    84,550.78x = 126,164.55 × 84,058.70
  4. Step 4: Simplify right side
    84,550.78x = 10,605,227,638.79
  5. Step 5: Solve for x
    x = 10,605,227,638.79/84,550.78
  6. Step 6: Final answer
    x = 125,430.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.