Home / 142,717.20-213,845.40-90,032.40

Finding the Fourth Proportional to 142,717.20, 213,845.40 and 90,032.40

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Solution

The fourth proportional to 142,717.20, 213,845.40 and 90,032.40 is: 134,903.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,717.20 : 213,845.40 = 90,032.40 : x
  2. Step 2: Convert to fraction form
    142,717.20/213,845.40 = 90,032.40/x
  3. Step 3: Cross multiply
    142,717.20x = 213,845.40 × 90,032.40
  4. Step 4: Simplify right side
    142,717.20x = 19,253,014,590.96
  5. Step 5: Solve for x
    x = 19,253,014,590.96/142,717.20
  6. Step 6: Final answer
    x = 134,903.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.