Home / 147,255.40-202,911.78-121,853.80

Finding the Fourth Proportional to 147,255.40, 202,911.78 and 121,853.80

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Solution

The fourth proportional to 147,255.40, 202,911.78 and 121,853.80 is: 167,909.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,255.40 : 202,911.78 = 121,853.80 : x
  2. Step 2: Convert to fraction form
    147,255.40/202,911.78 = 121,853.80/x
  3. Step 3: Cross multiply
    147,255.40x = 202,911.78 × 121,853.80
  4. Step 4: Simplify right side
    147,255.40x = 24,725,571,457.76
  5. Step 5: Solve for x
    x = 24,725,571,457.76/147,255.40
  6. Step 6: Final answer
    x = 167,909.44

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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.