Home / 155,387.96-214,403.28-90,844.76

Finding the Fourth Proportional to 155,387.96, 214,403.28 and 90,844.76

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Solution

The fourth proportional to 155,387.96, 214,403.28 and 90,844.76 is: 125,347.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,387.96 : 214,403.28 = 90,844.76 : x
  2. Step 2: Convert to fraction form
    155,387.96/214,403.28 = 90,844.76/x
  3. Step 3: Cross multiply
    155,387.96x = 214,403.28 × 90,844.76
  4. Step 4: Simplify right side
    155,387.96x = 19,477,414,514.81
  5. Step 5: Solve for x
    x = 19,477,414,514.81/155,387.96
  6. Step 6: Final answer
    x = 125,347.00

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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.