Home / 208,974.96-288,535.68-128,510.64

Finding the Fourth Proportional to 208,974.96, 288,535.68 and 128,510.64

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Solution

The fourth proportional to 208,974.96, 288,535.68 and 128,510.64 is: 177,437.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,974.96 : 288,535.68 = 128,510.64 : x
  2. Step 2: Convert to fraction form
    208,974.96/288,535.68 = 128,510.64/x
  3. Step 3: Cross multiply
    208,974.96x = 288,535.68 × 128,510.64
  4. Step 4: Simplify right side
    208,974.96x = 37,079,904,899.64
  5. Step 5: Solve for x
    x = 37,079,904,899.64/208,974.96
  6. Step 6: Final answer
    x = 177,437.07

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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.