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Finding the Fourth Proportional to 185,290.53, 255,701.07 and 100,407.60

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Solution

The fourth proportional to 185,290.53, 255,701.07 and 100,407.60 is: 138,562.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,290.53 : 255,701.07 = 100,407.60 : x
  2. Step 2: Convert to fraction form
    185,290.53/255,701.07 = 100,407.60/x
  3. Step 3: Cross multiply
    185,290.53x = 255,701.07 × 100,407.60
  4. Step 4: Simplify right side
    185,290.53x = 25,674,330,756.13
  5. Step 5: Solve for x
    x = 25,674,330,756.13/185,290.53
  6. Step 6: Final answer
    x = 138,562.56

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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.