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Finding the Fourth Proportional to 133,011.61, 183,550.31 and 72,580.75

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Solution

The fourth proportional to 133,011.61, 183,550.31 and 72,580.75 is: 100,158.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,011.61 : 183,550.31 = 72,580.75 : x
  2. Step 2: Convert to fraction form
    133,011.61/183,550.31 = 72,580.75/x
  3. Step 3: Cross multiply
    133,011.61x = 183,550.31 × 72,580.75
  4. Step 4: Simplify right side
    133,011.61x = 13,322,219,162.53
  5. Step 5: Solve for x
    x = 13,322,219,162.53/133,011.61
  6. Step 6: Final answer
    x = 100,158.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.