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Finding the Fourth Proportional to 114,312.80, 171,469.20 and 69,989.60

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Solution

The fourth proportional to 114,312.80, 171,469.20 and 69,989.60 is: 104,984.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,312.80 : 171,469.20 = 69,989.60 : x
  2. Step 2: Convert to fraction form
    114,312.80/171,469.20 = 69,989.60/x
  3. Step 3: Cross multiply
    114,312.80x = 171,469.20 × 69,989.60
  4. Step 4: Simplify right side
    114,312.80x = 12,001,060,720.32
  5. Step 5: Solve for x
    x = 12,001,060,720.32/114,312.80
  6. Step 6: Final answer
    x = 104,984.40

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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.