Home / 115,211.52-159,036.48-90,069.12

Finding the Fourth Proportional to 115,211.52, 159,036.48 and 90,069.12

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Solution

The fourth proportional to 115,211.52, 159,036.48 and 90,069.12 is: 124,330.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,211.52 : 159,036.48 = 90,069.12 : x
  2. Step 2: Convert to fraction form
    115,211.52/159,036.48 = 90,069.12/x
  3. Step 3: Cross multiply
    115,211.52x = 159,036.48 × 90,069.12
  4. Step 4: Simplify right side
    115,211.52x = 14,324,275,801.50
  5. Step 5: Solve for x
    x = 14,324,275,801.50/115,211.52
  6. Step 6: Final answer
    x = 124,330.24

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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.