Home / 127,085.23-175,384.92-76,800.43

Finding the Fourth Proportional to 127,085.23, 175,384.92 and 76,800.43

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Solution

The fourth proportional to 127,085.23, 175,384.92 and 76,800.43 is: 105,989.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,085.23 : 175,384.92 = 76,800.43 : x
  2. Step 2: Convert to fraction form
    127,085.23/175,384.92 = 76,800.43/x
  3. Step 3: Cross multiply
    127,085.23x = 175,384.92 × 76,800.43
  4. Step 4: Simplify right side
    127,085.23x = 13,469,637,271.52
  5. Step 5: Solve for x
    x = 13,469,637,271.52/127,085.23
  6. Step 6: Final answer
    x = 105,989.01

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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.