Home / 142,553.48-196,715.64-78,887.48

Finding the Fourth Proportional to 142,553.48, 196,715.64 and 78,887.48

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Solution

The fourth proportional to 142,553.48, 196,715.64 and 78,887.48 is: 108,860.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,553.48 : 196,715.64 = 78,887.48 : x
  2. Step 2: Convert to fraction form
    142,553.48/196,715.64 = 78,887.48/x
  3. Step 3: Cross multiply
    142,553.48x = 196,715.64 × 78,887.48
  4. Step 4: Simplify right side
    142,553.48x = 15,518,401,116.19
  5. Step 5: Solve for x
    x = 15,518,401,116.19/142,553.48
  6. Step 6: Final answer
    x = 108,860.21

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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.