Home / 145,087,137.10-217,347,270.45-87,408,073.90

Finding the Fourth Proportional to 145,087,137.10, 217,347,270.45 and 87,408,073.90

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Solution

The fourth proportional to 145,087,137.10, 217,347,270.45 and 87,408,073.90 is: 130,941,354.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,087,137.10 : 217,347,270.45 = 87,408,073.90 : x
  2. Step 2: Convert to fraction form
    145,087,137.10/217,347,270.45 = 87,408,073.90/x
  3. Step 3: Cross multiply
    145,087,137.10x = 217,347,270.45 × 87,408,073.90
  4. Step 4: Simplify right side
    145,087,137.10x = 18,997,906,277,456,888
  5. Step 5: Solve for x
    x = 18,997,906,277,456,888/145,087,137.10
  6. Step 6: Final answer
    x = 130,941,354.67

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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.