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Finding the Fourth Proportional to 101,420.39, 139,958.75 and 56,099.22

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Solution

The fourth proportional to 101,420.39, 139,958.75 and 56,099.22 is: 77,416.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,420.39 : 139,958.75 = 56,099.22 : x
  2. Step 2: Convert to fraction form
    101,420.39/139,958.75 = 56,099.22/x
  3. Step 3: Cross multiply
    101,420.39x = 139,958.75 × 56,099.22
  4. Step 4: Simplify right side
    101,420.39x = 7,851,576,707.18
  5. Step 5: Solve for x
    x = 7,851,576,707.18/101,420.39
  6. Step 6: Final answer
    x = 77,416.16

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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.