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Finding the Fourth Proportional to 101,926.79, 140,658.42 and 55,987.34

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Solution

The fourth proportional to 101,926.79, 140,658.42 and 55,987.34 is: 77,262.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,926.79 : 140,658.42 = 55,987.34 : x
  2. Step 2: Convert to fraction form
    101,926.79/140,658.42 = 55,987.34/x
  3. Step 3: Cross multiply
    101,926.79x = 140,658.42 × 55,987.34
  4. Step 4: Simplify right side
    101,926.79x = 7,875,090,291.06
  5. Step 5: Solve for x
    x = 7,875,090,291.06/101,926.79
  6. Step 6: Final answer
    x = 77,262.22

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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.