Home / 145,155,999.90-217,733,999.85-99,171,846.30

Finding the Fourth Proportional to 145,155,999.90, 217,733,999.85 and 99,171,846.30

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Solution

The fourth proportional to 145,155,999.90, 217,733,999.85 and 99,171,846.30 is: 148,757,769.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,155,999.90 : 217,733,999.85 = 99,171,846.30 : x
  2. Step 2: Convert to fraction form
    145,155,999.90/217,733,999.85 = 99,171,846.30/x
  3. Step 3: Cross multiply
    145,155,999.90x = 217,733,999.85 × 99,171,846.30
  4. Step 4: Simplify right side
    145,155,999.90x = 21,593,082,767,408,420
  5. Step 5: Solve for x
    x = 21,593,082,767,408,420/145,155,999.90
  6. Step 6: Final answer
    x = 148,757,769.45

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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.