Home / 155,111.72-214,020.95-90,551.66

Finding the Fourth Proportional to 155,111.72, 214,020.95 and 90,551.66

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Solution

The fourth proportional to 155,111.72, 214,020.95 and 90,551.66 is: 124,941.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,111.72 : 214,020.95 = 90,551.66 : x
  2. Step 2: Convert to fraction form
    155,111.72/214,020.95 = 90,551.66/x
  3. Step 3: Cross multiply
    155,111.72x = 214,020.95 × 90,551.66
  4. Step 4: Simplify right side
    155,111.72x = 19,379,950,774.41
  5. Step 5: Solve for x
    x = 19,379,950,774.41/155,111.72
  6. Step 6: Final answer
    x = 124,941.89

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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.