Home / 157,281.12-217,122.24-100,725.12

Finding the Fourth Proportional to 157,281.12, 217,122.24 and 100,725.12

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Solution

The fourth proportional to 157,281.12, 217,122.24 and 100,725.12 is: 139,048.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,281.12 : 217,122.24 = 100,725.12 : x
  2. Step 2: Convert to fraction form
    157,281.12/217,122.24 = 100,725.12/x
  3. Step 3: Cross multiply
    157,281.12x = 217,122.24 × 100,725.12
  4. Step 4: Simplify right side
    157,281.12x = 21,869,663,678.67
  5. Step 5: Solve for x
    x = 21,869,663,678.67/157,281.12
  6. Step 6: Final answer
    x = 139,048.24

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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.