Home / 91,108.09-136,663.05-31,945.19

Finding the Fourth Proportional to 91,108.09, 136,663.05 and 31,945.19

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Solution

The fourth proportional to 91,108.09, 136,663.05 and 31,945.19 is: 47,918.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,108.09 : 136,663.05 = 31,945.19 : x
  2. Step 2: Convert to fraction form
    91,108.09/136,663.05 = 31,945.19/x
  3. Step 3: Cross multiply
    91,108.09x = 136,663.05 × 31,945.19
  4. Step 4: Simplify right side
    91,108.09x = 4,365,726,355.02
  5. Step 5: Solve for x
    x = 4,365,726,355.02/91,108.09
  6. Step 6: Final answer
    x = 47,918.10

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1.5x scale

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.