Home / 163,399.16-225,515.87-99,774.20

Finding the Fourth Proportional to 163,399.16, 225,515.87 and 99,774.20

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Solution

The fourth proportional to 163,399.16, 225,515.87 and 99,774.20 is: 137,703.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,399.16 : 225,515.87 = 99,774.20 : x
  2. Step 2: Convert to fraction form
    163,399.16/225,515.87 = 99,774.20/x
  3. Step 3: Cross multiply
    163,399.16x = 225,515.87 × 99,774.20
  4. Step 4: Simplify right side
    163,399.16x = 22,500,663,890.10
  5. Step 5: Solve for x
    x = 22,500,663,890.10/163,399.16
  6. Step 6: Final answer
    x = 137,703.67

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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.