Home / 145,400.37-200,805.48-129,550.39

Finding the Fourth Proportional to 145,400.37, 200,805.48 and 129,550.39

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Solution

The fourth proportional to 145,400.37, 200,805.48 and 129,550.39 is: 178,915.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,400.37 : 200,805.48 = 129,550.39 : x
  2. Step 2: Convert to fraction form
    145,400.37/200,805.48 = 129,550.39/x
  3. Step 3: Cross multiply
    145,400.37x = 200,805.48 × 129,550.39
  4. Step 4: Simplify right side
    145,400.37x = 26,014,427,746.12
  5. Step 5: Solve for x
    x = 26,014,427,746.12/145,400.37
  6. Step 6: Final answer
    x = 178,915.83

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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.