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Finding the Fourth Proportional to 176,208.80, 264,313.20 and 81,438.80

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Solution

The fourth proportional to 176,208.80, 264,313.20 and 81,438.80 is: 122,158.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,208.80 : 264,313.20 = 81,438.80 : x
  2. Step 2: Convert to fraction form
    176,208.80/264,313.20 = 81,438.80/x
  3. Step 3: Cross multiply
    176,208.80x = 264,313.20 × 81,438.80
  4. Step 4: Simplify right side
    176,208.80x = 21,525,349,832.16
  5. Step 5: Solve for x
    x = 21,525,349,832.16/176,208.80
  6. Step 6: Final answer
    x = 122,158.20

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1.5x scale

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.