Home / 128,759,968.80-193,139,953.20-123,737,851.35

Finding the Fourth Proportional to 128,759,968.80, 193,139,953.20 and 123,737,851.35

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Solution

The fourth proportional to 128,759,968.80, 193,139,953.20 and 123,737,851.35 is: 185,606,777.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,759,968.80 : 193,139,953.20 = 123,737,851.35 : x
  2. Step 2: Convert to fraction form
    128,759,968.80/193,139,953.20 = 123,737,851.35/x
  3. Step 3: Cross multiply
    128,759,968.80x = 193,139,953.20 × 123,737,851.35
  4. Step 4: Simplify right side
    128,759,968.80x = 23,898,722,818,807,556
  5. Step 5: Solve for x
    x = 23,898,722,818,807,556/128,759,968.80
  6. Step 6: Final answer
    x = 185,606,777.03

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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.