Home / 115,013,209.32-158,448,500.10-80,142,630.12

Finding the Fourth Proportional to 115,013,209.32, 158,448,500.10 and 80,142,630.12

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Solution

The fourth proportional to 115,013,209.32, 158,448,500.10 and 80,142,630.12 is: 110,408,879.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,013,209.32 : 158,448,500.10 = 80,142,630.12 : x
  2. Step 2: Convert to fraction form
    115,013,209.32/158,448,500.10 = 80,142,630.12/x
  3. Step 3: Cross multiply
    115,013,209.32x = 158,448,500.10 × 80,142,630.12
  4. Step 4: Simplify right side
    115,013,209.32x = 12,698,479,536,583,084
  5. Step 5: Solve for x
    x = 12,698,479,536,583,084/115,013,209.32
  6. Step 6: Final answer
    x = 110,408,879.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.