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Finding the Fourth Proportional to 101,004.96, 139,385.74 and 55,681.80

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Solution

The fourth proportional to 101,004.96, 139,385.74 and 55,681.80 is: 76,840.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,004.96 : 139,385.74 = 55,681.80 : x
  2. Step 2: Convert to fraction form
    101,004.96/139,385.74 = 55,681.80/x
  3. Step 3: Cross multiply
    101,004.96x = 139,385.74 × 55,681.80
  4. Step 4: Simplify right side
    101,004.96x = 7,761,248,897.53
  5. Step 5: Solve for x
    x = 7,761,248,897.53/101,004.96
  6. Step 6: Final answer
    x = 76,840.27

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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.