Home / 189,408,658.60-284,112,987.90-87,371,986.60

Finding the Fourth Proportional to 189,408,658.60, 284,112,987.90 and 87,371,986.60

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Solution

The fourth proportional to 189,408,658.60, 284,112,987.90 and 87,371,986.60 is: 131,057,979.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,408,658.60 : 284,112,987.90 = 87,371,986.60 : x
  2. Step 2: Convert to fraction form
    189,408,658.60/284,112,987.90 = 87,371,986.60/x
  3. Step 3: Cross multiply
    189,408,658.60x = 284,112,987.90 × 87,371,986.60
  4. Step 4: Simplify right side
    189,408,658.60x = 24,823,516,171,684,760
  5. Step 5: Solve for x
    x = 24,823,516,171,684,760/189,408,658.60
  6. Step 6: Final answer
    x = 131,057,979.90

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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.