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Finding the Fourth Proportional to 101,486.69, 140,051.90 and 56,167.80

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Solution

The fourth proportional to 101,486.69, 140,051.90 and 56,167.80 is: 77,511.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,486.69 : 140,051.90 = 56,167.80 : x
  2. Step 2: Convert to fraction form
    101,486.69/140,051.90 = 56,167.80/x
  3. Step 3: Cross multiply
    101,486.69x = 140,051.90 × 56,167.80
  4. Step 4: Simplify right side
    101,486.69x = 7,866,406,127.72
  5. Step 5: Solve for x
    x = 7,866,406,127.72/101,486.69
  6. Step 6: Final answer
    x = 77,511.71

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1.5x scale

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.