Home / 142,302.80-196,381.92-77,775.62

Finding the Fourth Proportional to 142,302.80, 196,381.92 and 77,775.62

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Solution

The fourth proportional to 142,302.80, 196,381.92 and 77,775.62 is: 107,332.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,302.80 : 196,381.92 = 77,775.62 : x
  2. Step 2: Convert to fraction form
    142,302.80/196,381.92 = 77,775.62/x
  3. Step 3: Cross multiply
    142,302.80x = 196,381.92 × 77,775.62
  4. Step 4: Simplify right side
    142,302.80x = 15,273,724,602.88
  5. Step 5: Solve for x
    x = 15,273,724,602.88/142,302.80
  6. Step 6: Final answer
    x = 107,332.57

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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.