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Finding the Fourth Proportional to 171,738.40, 257,521.20 and 101,639.20

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Solution

The fourth proportional to 171,738.40, 257,521.20 and 101,639.20 is: 152,407.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,738.40 : 257,521.20 = 101,639.20 : x
  2. Step 2: Convert to fraction form
    171,738.40/257,521.20 = 101,639.20/x
  3. Step 3: Cross multiply
    171,738.40x = 257,521.20 × 101,639.20
  4. Step 4: Simplify right side
    171,738.40x = 26,174,248,751.04
  5. Step 5: Solve for x
    x = 26,174,248,751.04/171,738.40
  6. Step 6: Final answer
    x = 152,407.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.