Home / 142,406.07-213,483.40-53,721.86

Finding the Fourth Proportional to 142,406.07, 213,483.40 and 53,721.86

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Solution

The fourth proportional to 142,406.07, 213,483.40 and 53,721.86 is: 80,535.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,406.07 : 213,483.40 = 53,721.86 : x
  2. Step 2: Convert to fraction form
    142,406.07/213,483.40 = 53,721.86/x
  3. Step 3: Cross multiply
    142,406.07x = 213,483.40 × 53,721.86
  4. Step 4: Simplify right side
    142,406.07x = 11,468,725,127.42
  5. Step 5: Solve for x
    x = 11,468,725,127.42/142,406.07
  6. Step 6: Final answer
    x = 80,535.36

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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.