Home / 115,212.52-159,037.86-90,070.12

Finding the Fourth Proportional to 115,212.52, 159,037.86 and 90,070.12

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Solution

The fourth proportional to 115,212.52, 159,037.86 and 90,070.12 is: 124,331.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,212.52 : 159,037.86 = 90,070.12 : x
  2. Step 2: Convert to fraction form
    115,212.52/159,037.86 = 90,070.12/x
  3. Step 3: Cross multiply
    115,212.52x = 159,037.86 × 90,070.12
  4. Step 4: Simplify right side
    115,212.52x = 14,324,559,134.74
  5. Step 5: Solve for x
    x = 14,324,559,134.74/115,212.52
  6. Step 6: Final answer
    x = 124,331.62

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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.