Home / 142,293.06-196,364.49-78,630.86

Finding the Fourth Proportional to 142,293.06, 196,364.49 and 78,630.86

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Solution

The fourth proportional to 142,293.06, 196,364.49 and 78,630.86 is: 108,510.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,293.06 : 196,364.49 = 78,630.86 : x
  2. Step 2: Convert to fraction form
    142,293.06/196,364.49 = 78,630.86/x
  3. Step 3: Cross multiply
    142,293.06x = 196,364.49 × 78,630.86
  4. Step 4: Simplify right side
    142,293.06x = 15,440,307,740.34
  5. Step 5: Solve for x
    x = 15,440,307,740.34/142,293.06
  6. Step 6: Final answer
    x = 108,510.62

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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.