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Finding the Fourth Proportional to 153,339.23, 230,055.90 and 78,511.91

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Solution

The fourth proportional to 153,339.23, 230,055.90 and 78,511.91 is: 117,791.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,339.23 : 230,055.90 = 78,511.91 : x
  2. Step 2: Convert to fraction form
    153,339.23/230,055.90 = 78,511.91/x
  3. Step 3: Cross multiply
    153,339.23x = 230,055.90 × 78,511.91
  4. Step 4: Simplify right side
    153,339.23x = 18,062,128,115.77
  5. Step 5: Solve for x
    x = 18,062,128,115.77/153,339.23
  6. Step 6: Final answer
    x = 117,791.96

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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.