Home / 128,085.90-176,754.87-71,496.06

Finding the Fourth Proportional to 128,085.90, 176,754.87 and 71,496.06

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Solution

The fourth proportional to 128,085.90, 176,754.87 and 71,496.06 is: 98,662.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,085.90 : 176,754.87 = 71,496.06 : x
  2. Step 2: Convert to fraction form
    128,085.90/176,754.87 = 71,496.06/x
  3. Step 3: Cross multiply
    128,085.90x = 176,754.87 × 71,496.06
  4. Step 4: Simplify right side
    128,085.90x = 12,637,276,790.81
  5. Step 5: Solve for x
    x = 12,637,276,790.81/128,085.90
  6. Step 6: Final answer
    x = 98,662.51

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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.