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Finding the Fourth Proportional to 105,005.80, 157,509.90 and 26,120.20

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Solution

The fourth proportional to 105,005.80, 157,509.90 and 26,120.20 is: 39,180.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,005.80 : 157,509.90 = 26,120.20 : x
  2. Step 2: Convert to fraction form
    105,005.80/157,509.90 = 26,120.20/x
  3. Step 3: Cross multiply
    105,005.80x = 157,509.90 × 26,120.20
  4. Step 4: Simplify right side
    105,005.80x = 4,114,190,089.98
  5. Step 5: Solve for x
    x = 4,114,190,089.98/105,005.80
  6. Step 6: Final answer
    x = 39,180.60

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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.