Home / 142,814.07-212,944.29-138,890.55

Finding the Fourth Proportional to 142,814.07, 212,944.29 and 138,890.55

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Solution

The fourth proportional to 142,814.07, 212,944.29 and 138,890.55 is: 207,094.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,814.07 : 212,944.29 = 138,890.55 : x
  2. Step 2: Convert to fraction form
    142,814.07/212,944.29 = 138,890.55/x
  3. Step 3: Cross multiply
    142,814.07x = 212,944.29 × 138,890.55
  4. Step 4: Simplify right side
    142,814.07x = 29,575,949,557.46
  5. Step 5: Solve for x
    x = 29,575,949,557.46/142,814.07
  6. Step 6: Final answer
    x = 207,094.09

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.