Home / 80,157,809.40-120,142,235.70-59,939,431.80

Finding the Fourth Proportional to 80,157,809.40, 120,142,235.70 and 59,939,431.80

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Solution

The fourth proportional to 80,157,809.40, 120,142,235.70 and 59,939,431.80 is: 89,838,499.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,157,809.40 : 120,142,235.70 = 59,939,431.80 : x
  2. Step 2: Convert to fraction form
    80,157,809.40/120,142,235.70 = 59,939,431.80/x
  3. Step 3: Cross multiply
    80,157,809.40x = 120,142,235.70 × 59,939,431.80
  4. Step 4: Simplify right side
    80,157,809.40x = 7,201,257,343,039,675
  5. Step 5: Solve for x
    x = 7,201,257,343,039,675/80,157,809.40
  6. Step 6: Final answer
    x = 89,838,499.79

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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.