Home / 145,256.25-200,420.78-87,894.13

Finding the Fourth Proportional to 145,256.25, 200,420.78 and 87,894.13

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Solution

The fourth proportional to 145,256.25, 200,420.78 and 87,894.13 is: 121,274.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,256.25 : 200,420.78 = 87,894.13 : x
  2. Step 2: Convert to fraction form
    145,256.25/200,420.78 = 87,894.13/x
  3. Step 3: Cross multiply
    145,256.25x = 200,420.78 × 87,894.13
  4. Step 4: Simplify right side
    145,256.25x = 17,615,810,268.89
  5. Step 5: Solve for x
    x = 17,615,810,268.89/145,256.25
  6. Step 6: Final answer
    x = 121,274.02

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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.