Home / 153,872.35-212,379.26-90,230.65

Finding the Fourth Proportional to 153,872.35, 212,379.26 and 90,230.65

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Solution

The fourth proportional to 153,872.35, 212,379.26 and 90,230.65 is: 124,539.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,872.35 : 212,379.26 = 90,230.65 : x
  2. Step 2: Convert to fraction form
    153,872.35/212,379.26 = 90,230.65/x
  3. Step 3: Cross multiply
    153,872.35x = 212,379.26 × 90,230.65
  4. Step 4: Simplify right side
    153,872.35x = 19,163,118,676.32
  5. Step 5: Solve for x
    x = 19,163,118,676.32/153,872.35
  6. Step 6: Final answer
    x = 124,539.07

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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.