Home / 191,619,007.20-287,428,510.80-68,856,136.20

Finding the Fourth Proportional to 191,619,007.20, 287,428,510.80 and 68,856,136.20

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Solution

The fourth proportional to 191,619,007.20, 287,428,510.80 and 68,856,136.20 is: 103,284,204.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,619,007.20 : 287,428,510.80 = 68,856,136.20 : x
  2. Step 2: Convert to fraction form
    191,619,007.20/287,428,510.80 = 68,856,136.20/x
  3. Step 3: Cross multiply
    191,619,007.20x = 287,428,510.80 × 68,856,136.20
  4. Step 4: Simplify right side
    191,619,007.20x = 19,791,216,687,407,972
  5. Step 5: Solve for x
    x = 19,791,216,687,407,972/191,619,007.20
  6. Step 6: Final answer
    x = 103,284,204.30

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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.