Home / 145,111.80-217,589.70-51,605.40

Finding the Fourth Proportional to 145,111.80, 217,589.70 and 51,605.40

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Solution

The fourth proportional to 145,111.80, 217,589.70 and 51,605.40 is: 77,380.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,111.80 : 217,589.70 = 51,605.40 : x
  2. Step 2: Convert to fraction form
    145,111.80/217,589.70 = 51,605.40/x
  3. Step 3: Cross multiply
    145,111.80x = 217,589.70 × 51,605.40
  4. Step 4: Simplify right side
    145,111.80x = 11,228,803,504.38
  5. Step 5: Solve for x
    x = 11,228,803,504.38/145,111.80
  6. Step 6: Final answer
    x = 77,380.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.