Home / 142,045.83-212,865.75-104,309.91

Finding the Fourth Proportional to 142,045.83, 212,865.75 and 104,309.91

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Solution

The fourth proportional to 142,045.83, 212,865.75 and 104,309.91 is: 156,315.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,045.83 : 212,865.75 = 104,309.91 : x
  2. Step 2: Convert to fraction form
    142,045.83/212,865.75 = 104,309.91/x
  3. Step 3: Cross multiply
    142,045.83x = 212,865.75 × 104,309.91
  4. Step 4: Simplify right side
    142,045.83x = 22,204,007,224.58
  5. Step 5: Solve for x
    x = 22,204,007,224.58/142,045.83
  6. Step 6: Final answer
    x = 156,315.80

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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.