Home / 145,000,804.20-200,101,941.96-78,921,144.86

Finding the Fourth Proportional to 145,000,804.20, 200,101,941.96 and 78,921,144.86

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Solution

The fourth proportional to 145,000,804.20, 200,101,941.96 and 78,921,144.86 is: 108,911,632.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,000,804.20 : 200,101,941.96 = 78,921,144.86 : x
  2. Step 2: Convert to fraction form
    145,000,804.20/200,101,941.96 = 78,921,144.86/x
  3. Step 3: Cross multiply
    145,000,804.20x = 200,101,941.96 × 78,921,144.86
  4. Step 4: Simplify right side
    145,000,804.20x = 15,792,274,348,192,472
  5. Step 5: Solve for x
    x = 15,792,274,348,192,472/145,000,804.20
  6. Step 6: Final answer
    x = 108,911,632.84

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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.