Home / 111,128.40-166,656.15-40,998.60

Finding the Fourth Proportional to 111,128.40, 166,656.15 and 40,998.60

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Solution

The fourth proportional to 111,128.40, 166,656.15 and 40,998.60 is: 61,484.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,128.40 : 166,656.15 = 40,998.60 : x
  2. Step 2: Convert to fraction form
    111,128.40/166,656.15 = 40,998.60/x
  3. Step 3: Cross multiply
    111,128.40x = 166,656.15 × 40,998.60
  4. Step 4: Simplify right side
    111,128.40x = 6,832,668,831.39
  5. Step 5: Solve for x
    x = 6,832,668,831.39/111,128.40
  6. Step 6: Final answer
    x = 61,484.45

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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.