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Finding the Fourth Proportional to 133,505.20, 200,095.80 and 77,237.20

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Solution

The fourth proportional to 133,505.20, 200,095.80 and 77,237.20 is: 115,762.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,505.20 : 200,095.80 = 77,237.20 : x
  2. Step 2: Convert to fraction form
    133,505.20/200,095.80 = 77,237.20/x
  3. Step 3: Cross multiply
    133,505.20x = 200,095.80 × 77,237.20
  4. Step 4: Simplify right side
    133,505.20x = 15,454,839,323.76
  5. Step 5: Solve for x
    x = 15,454,839,323.76/133,505.20
  6. Step 6: Final answer
    x = 115,762.08

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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.