Home / 142,035.69-196,009.04-78,373.47

Finding the Fourth Proportional to 142,035.69, 196,009.04 and 78,373.47

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Solution

The fourth proportional to 142,035.69, 196,009.04 and 78,373.47 is: 108,155.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,035.69 : 196,009.04 = 78,373.47 : x
  2. Step 2: Convert to fraction form
    142,035.69/196,009.04 = 78,373.47/x
  3. Step 3: Cross multiply
    142,035.69x = 196,009.04 × 78,373.47
  4. Step 4: Simplify right side
    142,035.69x = 15,361,908,224.30
  5. Step 5: Solve for x
    x = 15,361,908,224.30/142,035.69
  6. Step 6: Final answer
    x = 108,155.27

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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.