Home / 142,071.16-212,872.50-127,421.92

Finding the Fourth Proportional to 142,071.16, 212,872.50 and 127,421.92

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Solution

The fourth proportional to 142,071.16, 212,872.50 and 127,421.92 is: 190,922.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,071.16 : 212,872.50 = 127,421.92 : x
  2. Step 2: Convert to fraction form
    142,071.16/212,872.50 = 127,421.92/x
  3. Step 3: Cross multiply
    142,071.16x = 212,872.50 × 127,421.92
  4. Step 4: Simplify right side
    142,071.16x = 27,124,622,665.20
  5. Step 5: Solve for x
    x = 27,124,622,665.20/142,071.16
  6. Step 6: Final answer
    x = 190,922.79

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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.