Home / 80,109,000.30-120,163,500.45-53,182,656.30

Finding the Fourth Proportional to 80,109,000.30, 120,163,500.45 and 53,182,656.30

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Solution

The fourth proportional to 80,109,000.30, 120,163,500.45 and 53,182,656.30 is: 79,773,984.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,109,000.30 : 120,163,500.45 = 53,182,656.30 : x
  2. Step 2: Convert to fraction form
    80,109,000.30/120,163,500.45 = 53,182,656.30/x
  3. Step 3: Cross multiply
    80,109,000.30x = 120,163,500.45 × 53,182,656.30
  4. Step 4: Simplify right side
    80,109,000.30x = 6,390,614,144,237,245
  5. Step 5: Solve for x
    x = 6,390,614,144,237,245/80,109,000.30
  6. Step 6: Final answer
    x = 79,773,984.45

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1.5x scale

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.