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Finding the Fourth Proportional to 101,004.99, 139,387.31 and 55,681.93

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Solution

The fourth proportional to 101,004.99, 139,387.31 and 55,681.93 is: 76,841.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,004.99 : 139,387.31 = 55,681.93 : x
  2. Step 2: Convert to fraction form
    101,004.99/139,387.31 = 55,681.93/x
  3. Step 3: Cross multiply
    101,004.99x = 139,387.31 × 55,681.93
  4. Step 4: Simplify right side
    101,004.99x = 7,761,354,438.31
  5. Step 5: Solve for x
    x = 7,761,354,438.31/101,004.99
  6. Step 6: Final answer
    x = 76,841.30

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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.