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Finding the Fourth Proportional to 101,602.13, 140,212.07 and 56,280.81

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Solution

The fourth proportional to 101,602.13, 140,212.07 and 56,280.81 is: 77,668.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,602.13 : 140,212.07 = 56,280.81 : x
  2. Step 2: Convert to fraction form
    101,602.13/140,212.07 = 56,280.81/x
  3. Step 3: Cross multiply
    101,602.13x = 140,212.07 × 56,280.81
  4. Step 4: Simplify right side
    101,602.13x = 7,891,248,589.97
  5. Step 5: Solve for x
    x = 7,891,248,589.97/101,602.13
  6. Step 6: Final answer
    x = 77,668.14

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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.