Home / 158,194,939.20-218,310,762.21-87,631,630.24

Finding the Fourth Proportional to 158,194,939.20, 218,310,762.21 and 87,631,630.24

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Solution

The fourth proportional to 158,194,939.20, 218,310,762.21 and 87,631,630.24 is: 120,932,616.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,194,939.20 : 218,310,762.21 = 87,631,630.24 : x
  2. Step 2: Convert to fraction form
    158,194,939.20/218,310,762.21 = 87,631,630.24/x
  3. Step 3: Cross multiply
    158,194,939.20x = 218,310,762.21 × 87,631,630.24
  4. Step 4: Simplify right side
    158,194,939.20x = 19,130,927,990,934,224
  5. Step 5: Solve for x
    x = 19,130,927,990,934,224/158,194,939.20
  6. Step 6: Final answer
    x = 120,932,616.98

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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.