Home / 108,139.92-161,210.28-106,435.68

Finding the Fourth Proportional to 108,139.92, 161,210.28 and 106,435.68

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Solution

The fourth proportional to 108,139.92, 161,210.28 and 106,435.68 is: 158,669.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,139.92 : 161,210.28 = 106,435.68 : x
  2. Step 2: Convert to fraction form
    108,139.92/161,210.28 = 106,435.68/x
  3. Step 3: Cross multiply
    108,139.92x = 161,210.28 × 106,435.68
  4. Step 4: Simplify right side
    108,139.92x = 17,158,525,774.79
  5. Step 5: Solve for x
    x = 17,158,525,774.79/108,139.92
  6. Step 6: Final answer
    x = 158,669.67

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.