Home / 78,678,052.80-118,017,079.20-73,639,204.80

Finding the Fourth Proportional to 78,678,052.80, 118,017,079.20 and 73,639,204.80

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Solution

The fourth proportional to 78,678,052.80, 118,017,079.20 and 73,639,204.80 is: 110,458,807.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,678,052.80 : 118,017,079.20 = 73,639,204.80 : x
  2. Step 2: Convert to fraction form
    78,678,052.80/118,017,079.20 = 73,639,204.80/x
  3. Step 3: Cross multiply
    78,678,052.80x = 118,017,079.20 × 73,639,204.80
  4. Step 4: Simplify right side
    78,678,052.80x = 8,690,683,865,106,620
  5. Step 5: Solve for x
    x = 8,690,683,865,106,620/78,678,052.80
  6. Step 6: Final answer
    x = 110,458,807.20

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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.