Home / 128,740,427.20-193,110,640.80-112,112,228.80

Finding the Fourth Proportional to 128,740,427.20, 193,110,640.80 and 112,112,228.80

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Solution

The fourth proportional to 128,740,427.20, 193,110,640.80 and 112,112,228.80 is: 168,168,343.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,740,427.20 : 193,110,640.80 = 112,112,228.80 : x
  2. Step 2: Convert to fraction form
    128,740,427.20/193,110,640.80 = 112,112,228.80/x
  3. Step 3: Cross multiply
    128,740,427.20x = 193,110,640.80 × 112,112,228.80
  4. Step 4: Simplify right side
    128,740,427.20x = 21,650,064,345,084,216
  5. Step 5: Solve for x
    x = 21,650,064,345,084,216/128,740,427.20
  6. Step 6: Final answer
    x = 168,168,343.20

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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.