Home / 230,020.90-317,438.13-128,050.54

Finding the Fourth Proportional to 230,020.90, 317,438.13 and 128,050.54

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Solution

The fourth proportional to 230,020.90, 317,438.13 and 128,050.54 is: 176,714.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,020.90 : 317,438.13 = 128,050.54 : x
  2. Step 2: Convert to fraction form
    230,020.90/317,438.13 = 128,050.54/x
  3. Step 3: Cross multiply
    230,020.90x = 317,438.13 × 128,050.54
  4. Step 4: Simplify right side
    230,020.90x = 40,648,123,963.09
  5. Step 5: Solve for x
    x = 40,648,123,963.09/230,020.90
  6. Step 6: Final answer
    x = 176,714.92

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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.