Home / 128,085.56-176,752.38-71,495.64

Finding the Fourth Proportional to 128,085.56, 176,752.38 and 71,495.64

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Solution

The fourth proportional to 128,085.56, 176,752.38 and 71,495.64 is: 98,660.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,085.56 : 176,752.38 = 71,495.64 : x
  2. Step 2: Convert to fraction form
    128,085.56/176,752.38 = 71,495.64/x
  3. Step 3: Cross multiply
    128,085.56x = 176,752.38 × 71,495.64
  4. Step 4: Simplify right side
    128,085.56x = 12,637,024,529.62
  5. Step 5: Solve for x
    x = 12,637,024,529.62/128,085.56
  6. Step 6: Final answer
    x = 98,660.81

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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.