Home / 80,109,019.80-120,163,529.70-53,182,675.80

Finding the Fourth Proportional to 80,109,019.80, 120,163,529.70 and 53,182,675.80

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Solution

The fourth proportional to 80,109,019.80, 120,163,529.70 and 53,182,675.80 is: 79,774,013.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,109,019.80 : 120,163,529.70 = 53,182,675.80 : x
  2. Step 2: Convert to fraction form
    80,109,019.80/120,163,529.70 = 53,182,675.80/x
  3. Step 3: Cross multiply
    80,109,019.80x = 120,163,529.70 × 53,182,675.80
  4. Step 4: Simplify right side
    80,109,019.80x = 6,390,618,043,018,771
  5. Step 5: Solve for x
    x = 6,390,618,043,018,771/80,109,019.80
  6. Step 6: Final answer
    x = 79,774,013.70

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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.