Home / 141,319.08-212,051.25-78,127.47

Finding the Fourth Proportional to 141,319.08, 212,051.25 and 78,127.47

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Solution

The fourth proportional to 141,319.08, 212,051.25 and 78,127.47 is: 117,231.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,319.08 : 212,051.25 = 78,127.47 : x
  2. Step 2: Convert to fraction form
    141,319.08/212,051.25 = 78,127.47/x
  3. Step 3: Cross multiply
    141,319.08x = 212,051.25 × 78,127.47
  4. Step 4: Simplify right side
    141,319.08x = 16,567,027,672.84
  5. Step 5: Solve for x
    x = 16,567,027,672.84/141,319.08
  6. Step 6: Final answer
    x = 117,231.36

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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.