Home / 128,740,005.20-193,110,007.80-112,111,806.80

Finding the Fourth Proportional to 128,740,005.20, 193,110,007.80 and 112,111,806.80

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Solution

The fourth proportional to 128,740,005.20, 193,110,007.80 and 112,111,806.80 is: 168,167,710.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,740,005.20 : 193,110,007.80 = 112,111,806.80 : x
  2. Step 2: Convert to fraction form
    128,740,005.20/193,110,007.80 = 112,111,806.80/x
  3. Step 3: Cross multiply
    128,740,005.20x = 193,110,007.80 × 112,111,806.80
  4. Step 4: Simplify right side
    128,740,005.20x = 21,649,911,885,620,092
  5. Step 5: Solve for x
    x = 21,649,911,885,620,092/128,740,005.20
  6. Step 6: Final answer
    x = 168,167,710.20

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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.