Home / 142,030.38-212,979.96-53,220.36

Finding the Fourth Proportional to 142,030.38, 212,979.96 and 53,220.36

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Solution

The fourth proportional to 142,030.38, 212,979.96 and 53,220.36 is: 79,805.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,030.38 : 212,979.96 = 53,220.36 : x
  2. Step 2: Convert to fraction form
    142,030.38/212,979.96 = 53,220.36/x
  3. Step 3: Cross multiply
    142,030.38x = 212,979.96 × 53,220.36
  4. Step 4: Simplify right side
    142,030.38x = 11,334,870,143.99
  5. Step 5: Solve for x
    x = 11,334,870,143.99/142,030.38
  6. Step 6: Final answer
    x = 79,805.96

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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.