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Finding the Fourth Proportional to 128,967,000.30, 193,450,500.45 and 128,967,000.30

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Solution

The fourth proportional to 128,967,000.30, 193,450,500.45 and 128,967,000.30 is: 193,450,500.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,967,000.30 : 193,450,500.45 = 128,967,000.30 : x
  2. Step 2: Convert to fraction form
    128,967,000.30/193,450,500.45 = 128,967,000.30/x
  3. Step 3: Cross multiply
    128,967,000.30x = 193,450,500.45 × 128,967,000.30
  4. Step 4: Simplify right side
    128,967,000.30x = 24,948,730,749,570,300
  5. Step 5: Solve for x
    x = 24,948,730,749,570,300/128,967,000.30
  6. Step 6: Final answer
    x = 193,450,500.45

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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.