Home / 127,189,969.20-190,784,953.80-118,686,913.20

Finding the Fourth Proportional to 127,189,969.20, 190,784,953.80 and 118,686,913.20

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Solution

The fourth proportional to 127,189,969.20, 190,784,953.80 and 118,686,913.20 is: 178,030,369.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,189,969.20 : 190,784,953.80 = 118,686,913.20 : x
  2. Step 2: Convert to fraction form
    127,189,969.20/190,784,953.80 = 118,686,913.20/x
  3. Step 3: Cross multiply
    127,189,969.20x = 190,784,953.80 × 118,686,913.20
  4. Step 4: Simplify right side
    127,189,969.20x = 22,643,677,251,526,612
  5. Step 5: Solve for x
    x = 22,643,677,251,526,612/127,189,969.20
  6. Step 6: Final answer
    x = 178,030,369.80

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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.