Home / 128,435,831.31-177,241,561.52-69,698,496.59

Finding the Fourth Proportional to 128,435,831.31, 177,241,561.52 and 69,698,496.59

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Solution

The fourth proportional to 128,435,831.31, 177,241,561.52 and 69,698,496.59 is: 96,183,987.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,435,831.31 : 177,241,561.52 = 69,698,496.59 : x
  2. Step 2: Convert to fraction form
    128,435,831.31/177,241,561.52 = 69,698,496.59/x
  3. Step 3: Cross multiply
    128,435,831.31x = 177,241,561.52 × 69,698,496.59
  4. Step 4: Simplify right side
    128,435,831.31x = 12,353,470,370,859,502
  5. Step 5: Solve for x
    x = 12,353,470,370,859,502/128,435,831.31
  6. Step 6: Final answer
    x = 96,183,987.33

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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.