Home / 145,139.36-217,791.95-56,381.31

Finding the Fourth Proportional to 145,139.36, 217,791.95 and 56,381.31

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Solution

The fourth proportional to 145,139.36, 217,791.95 and 56,381.31 is: 84,604.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,139.36 : 217,791.95 = 56,381.31 : x
  2. Step 2: Convert to fraction form
    145,139.36/217,791.95 = 56,381.31/x
  3. Step 3: Cross multiply
    145,139.36x = 217,791.95 × 56,381.31
  4. Step 4: Simplify right side
    145,139.36x = 12,279,395,166.55
  5. Step 5: Solve for x
    x = 12,279,395,166.55/145,139.36
  6. Step 6: Final answer
    x = 84,604.17

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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.