Home / 116,143.66-174,097.86-78,707.54

Finding the Fourth Proportional to 116,143.66, 174,097.86 and 78,707.54

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Solution

The fourth proportional to 116,143.66, 174,097.86 and 78,707.54 is: 117,981.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,143.66 : 174,097.86 = 78,707.54 : x
  2. Step 2: Convert to fraction form
    116,143.66/174,097.86 = 78,707.54/x
  3. Step 3: Cross multiply
    116,143.66x = 174,097.86 × 78,707.54
  4. Step 4: Simplify right side
    116,143.66x = 13,702,814,279.86
  5. Step 5: Solve for x
    x = 13,702,814,279.86/116,143.66
  6. Step 6: Final answer
    x = 117,981.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.