Home / 142,806.17-197,064.48-78,263.11

Finding the Fourth Proportional to 142,806.17, 197,064.48 and 78,263.11

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Solution

The fourth proportional to 142,806.17, 197,064.48 and 78,263.11 is: 107,998.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,806.17 : 197,064.48 = 78,263.11 : x
  2. Step 2: Convert to fraction form
    142,806.17/197,064.48 = 78,263.11/x
  3. Step 3: Cross multiply
    142,806.17x = 197,064.48 × 78,263.11
  4. Step 4: Simplify right side
    142,806.17x = 15,422,879,615.15
  5. Step 5: Solve for x
    x = 15,422,879,615.15/142,806.17
  6. Step 6: Final answer
    x = 107,998.69

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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.