Home / 128,480,587.49-177,303,435.71-69,743,292.50

Finding the Fourth Proportional to 128,480,587.49, 177,303,435.71 and 69,743,292.50

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Solution

The fourth proportional to 128,480,587.49, 177,303,435.71 and 69,743,292.50 is: 96,245,865.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,480,587.49 : 177,303,435.71 = 69,743,292.50 : x
  2. Step 2: Convert to fraction form
    128,480,587.49/177,303,435.71 = 69,743,292.50/x
  3. Step 3: Cross multiply
    128,480,587.49x = 177,303,435.71 × 69,743,292.50
  4. Step 4: Simplify right side
    128,480,587.49x = 12,365,725,378,072,018
  5. Step 5: Solve for x
    x = 12,365,725,378,072,018/128,480,587.49
  6. Step 6: Final answer
    x = 96,245,865.77

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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.