Home / 102,580.20-153,740.70-91,434.60

Finding the Fourth Proportional to 102,580.20, 153,740.70 and 91,434.60

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Solution

The fourth proportional to 102,580.20, 153,740.70 and 91,434.60 is: 137,036.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,580.20 : 153,740.70 = 91,434.60 : x
  2. Step 2: Convert to fraction form
    102,580.20/153,740.70 = 91,434.60/x
  3. Step 3: Cross multiply
    102,580.20x = 153,740.70 × 91,434.60
  4. Step 4: Simplify right side
    102,580.20x = 14,057,219,408.22
  5. Step 5: Solve for x
    x = 14,057,219,408.22/102,580.20
  6. Step 6: Final answer
    x = 137,036.38

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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.