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Finding the Fourth Proportional to 133,151.16, 183,749.58 and 72,720.66

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Solution

The fourth proportional to 133,151.16, 183,749.58 and 72,720.66 is: 100,355.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,151.16 : 183,749.58 = 72,720.66 : x
  2. Step 2: Convert to fraction form
    133,151.16/183,749.58 = 72,720.66/x
  3. Step 3: Cross multiply
    133,151.16x = 183,749.58 × 72,720.66
  4. Step 4: Simplify right side
    133,151.16x = 13,362,390,732.32
  5. Step 5: Solve for x
    x = 13,362,390,732.32/133,151.16
  6. Step 6: Final answer
    x = 100,355.05

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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.