Home / 78,330.06-117,494.54-19,166.58

Finding the Fourth Proportional to 78,330.06, 117,494.54 and 19,166.58

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Solution

The fourth proportional to 78,330.06, 117,494.54 and 19,166.58 is: 28,749.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,330.06 : 117,494.54 = 19,166.58 : x
  2. Step 2: Convert to fraction form
    78,330.06/117,494.54 = 19,166.58/x
  3. Step 3: Cross multiply
    78,330.06x = 117,494.54 × 19,166.58
  4. Step 4: Simplify right side
    78,330.06x = 2,251,968,500.47
  5. Step 5: Solve for x
    x = 2,251,968,500.47/78,330.06
  6. Step 6: Final answer
    x = 28,749.74

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1.5x scale

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.