Home / 141,420.57-195,161.13-77,762.49

Finding the Fourth Proportional to 141,420.57, 195,161.13 and 77,762.49

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Solution

The fourth proportional to 141,420.57, 195,161.13 and 77,762.49 is: 107,312.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,420.57 : 195,161.13 = 77,762.49 : x
  2. Step 2: Convert to fraction form
    141,420.57/195,161.13 = 77,762.49/x
  3. Step 3: Cross multiply
    141,420.57x = 195,161.13 × 77,762.49
  4. Step 4: Simplify right side
    141,420.57x = 15,176,215,420.01
  5. Step 5: Solve for x
    x = 15,176,215,420.01/141,420.57
  6. Step 6: Final answer
    x = 107,312.64

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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.