Home / 84,902.40-117,128.97-53,015.94

Finding the Fourth Proportional to 84,902.40, 117,128.97 and 53,015.94

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Solution

The fourth proportional to 84,902.40, 117,128.97 and 53,015.94 is: 73,139.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,902.40 : 117,128.97 = 53,015.94 : x
  2. Step 2: Convert to fraction form
    84,902.40/117,128.97 = 53,015.94/x
  3. Step 3: Cross multiply
    84,902.40x = 117,128.97 × 53,015.94
  4. Step 4: Simplify right side
    84,902.40x = 6,209,702,445.78
  5. Step 5: Solve for x
    x = 6,209,702,445.78/84,902.40
  6. Step 6: Final answer
    x = 73,139.30

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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.