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Finding the Fourth Proportional to 133,572.75, 184,330.40 and 76,987.77

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Solution

The fourth proportional to 133,572.75, 184,330.40 and 76,987.77 is: 106,243.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,572.75 : 184,330.40 = 76,987.77 : x
  2. Step 2: Convert to fraction form
    133,572.75/184,330.40 = 76,987.77/x
  3. Step 3: Cross multiply
    133,572.75x = 184,330.40 × 76,987.77
  4. Step 4: Simplify right side
    133,572.75x = 14,191,186,439.21
  5. Step 5: Solve for x
    x = 14,191,186,439.21/133,572.75
  6. Step 6: Final answer
    x = 106,243.13

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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.