Home / 132,771.40-183,222.15-72,342.47

Finding the Fourth Proportional to 132,771.40, 183,222.15 and 72,342.47

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Solution

The fourth proportional to 132,771.40, 183,222.15 and 72,342.47 is: 99,831.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,771.40 : 183,222.15 = 72,342.47 : x
  2. Step 2: Convert to fraction form
    132,771.40/183,222.15 = 72,342.47/x
  3. Step 3: Cross multiply
    132,771.40x = 183,222.15 × 72,342.47
  4. Step 4: Simplify right side
    132,771.40x = 13,254,742,452.78
  5. Step 5: Solve for x
    x = 13,254,742,452.78/132,771.40
  6. Step 6: Final answer
    x = 99,831.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.