Home / 142,333.04-196,420.38-77,802.38

Finding the Fourth Proportional to 142,333.04, 196,420.38 and 77,802.38

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Solution

The fourth proportional to 142,333.04, 196,420.38 and 77,802.38 is: 107,367.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,333.04 : 196,420.38 = 77,802.38 : x
  2. Step 2: Convert to fraction form
    142,333.04/196,420.38 = 77,802.38/x
  3. Step 3: Cross multiply
    142,333.04x = 196,420.38 × 77,802.38
  4. Step 4: Simplify right side
    142,333.04x = 15,281,973,044.50
  5. Step 5: Solve for x
    x = 15,281,973,044.50/142,333.04
  6. Step 6: Final answer
    x = 107,367.71

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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.