Home / 128,054.55-176,733.09-71,469.57

Finding the Fourth Proportional to 128,054.55, 176,733.09 and 71,469.57

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Solution

The fourth proportional to 128,054.55, 176,733.09 and 71,469.57 is: 98,637.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,054.55 : 176,733.09 = 71,469.57 : x
  2. Step 2: Convert to fraction form
    128,054.55/176,733.09 = 71,469.57/x
  3. Step 3: Cross multiply
    128,054.55x = 176,733.09 × 71,469.57
  4. Step 4: Simplify right side
    128,054.55x = 12,631,037,947.07
  5. Step 5: Solve for x
    x = 12,631,037,947.07/128,054.55
  6. Step 6: Final answer
    x = 98,637.95

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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.