Home / 142,484.84-196,629.04-78,822.70

Finding the Fourth Proportional to 142,484.84, 196,629.04 and 78,822.70

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Solution

The fourth proportional to 142,484.84, 196,629.04 and 78,822.70 is: 108,775.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,484.84 : 196,629.04 = 78,822.70 : x
  2. Step 2: Convert to fraction form
    142,484.84/196,629.04 = 78,822.70/x
  3. Step 3: Cross multiply
    142,484.84x = 196,629.04 × 78,822.70
  4. Step 4: Simplify right side
    142,484.84x = 15,498,831,831.21
  5. Step 5: Solve for x
    x = 15,498,831,831.21/142,484.84
  6. Step 6: Final answer
    x = 108,775.30

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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.