Home / 154,064.93-212,590.06-90,379.49

Finding the Fourth Proportional to 154,064.93, 212,590.06 and 90,379.49

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Solution

The fourth proportional to 154,064.93, 212,590.06 and 90,379.49 is: 124,712.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,064.93 : 212,590.06 = 90,379.49 : x
  2. Step 2: Convert to fraction form
    154,064.93/212,590.06 = 90,379.49/x
  3. Step 3: Cross multiply
    154,064.93x = 212,590.06 × 90,379.49
  4. Step 4: Simplify right side
    154,064.93x = 19,213,779,687.02
  5. Step 5: Solve for x
    x = 19,213,779,687.02/154,064.93
  6. Step 6: Final answer
    x = 124,712.23

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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.