Home / 100,034.07-138,041.90-54,703.25

Finding the Fourth Proportional to 100,034.07, 138,041.90 and 54,703.25

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Solution

The fourth proportional to 100,034.07, 138,041.90 and 54,703.25 is: 75,487.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,034.07 : 138,041.90 = 54,703.25 : x
  2. Step 2: Convert to fraction form
    100,034.07/138,041.90 = 54,703.25/x
  3. Step 3: Cross multiply
    100,034.07x = 138,041.90 × 54,703.25
  4. Step 4: Simplify right side
    100,034.07x = 7,551,339,602.45
  5. Step 5: Solve for x
    x = 7,551,339,602.45/100,034.07
  6. Step 6: Final answer
    x = 75,487.68

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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.