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Finding the Fourth Proportional to 133,370.78, 184,118.56 and 103,087.70

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Solution

The fourth proportional to 133,370.78, 184,118.56 and 103,087.70 is: 142,312.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,370.78 : 184,118.56 = 103,087.70 : x
  2. Step 2: Convert to fraction form
    133,370.78/184,118.56 = 103,087.70/x
  3. Step 3: Cross multiply
    133,370.78x = 184,118.56 × 103,087.70
  4. Step 4: Simplify right side
    133,370.78x = 18,980,358,877.71
  5. Step 5: Solve for x
    x = 18,980,358,877.71/133,370.78
  6. Step 6: Final answer
    x = 142,312.72

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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.