Home / 128,510.24-177,424.52-82,588.50

Finding the Fourth Proportional to 128,510.24, 177,424.52 and 82,588.50

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Solution

The fourth proportional to 128,510.24, 177,424.52 and 82,588.50 is: 114,023.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,510.24 : 177,424.52 = 82,588.50 : x
  2. Step 2: Convert to fraction form
    128,510.24/177,424.52 = 82,588.50/x
  3. Step 3: Cross multiply
    128,510.24x = 177,424.52 × 82,588.50
  4. Step 4: Simplify right side
    128,510.24x = 14,653,224,557.08
  5. Step 5: Solve for x
    x = 14,653,224,557.08/128,510.24
  6. Step 6: Final answer
    x = 114,023.79

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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.