Home / 91,813,622.70-137,720,434.05-79,856,200.20

Finding the Fourth Proportional to 91,813,622.70, 137,720,434.05 and 79,856,200.20

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Solution

The fourth proportional to 91,813,622.70, 137,720,434.05 and 79,856,200.20 is: 119,784,300.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,813,622.70 : 137,720,434.05 = 79,856,200.20 : x
  2. Step 2: Convert to fraction form
    91,813,622.70/137,720,434.05 = 79,856,200.20/x
  3. Step 3: Cross multiply
    91,813,622.70x = 137,720,434.05 × 79,856,200.20
  4. Step 4: Simplify right side
    91,813,622.70x = 10,997,830,553,127,698
  5. Step 5: Solve for x
    x = 10,997,830,553,127,698/91,813,622.70
  6. Step 6: Final answer
    x = 119,784,300.30

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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.