Home / 117,230.36-161,688.63-100,905.35

Finding the Fourth Proportional to 117,230.36, 161,688.63 and 100,905.35

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Solution

The fourth proportional to 117,230.36, 161,688.63 and 100,905.35 is: 139,172.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,230.36 : 161,688.63 = 100,905.35 : x
  2. Step 2: Convert to fraction form
    117,230.36/161,688.63 = 100,905.35/x
  3. Step 3: Cross multiply
    117,230.36x = 161,688.63 × 100,905.35
  4. Step 4: Simplify right side
    117,230.36x = 16,315,248,205.39
  5. Step 5: Solve for x
    x = 16,315,248,205.39/117,230.36
  6. Step 6: Final answer
    x = 139,172.55

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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.