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Finding the Fourth Proportional to 99,000.70, 138,950.90 and 99,000.70

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Solution

The fourth proportional to 99,000.70, 138,950.90 and 99,000.70 is: 138,950.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,000.70 : 138,950.90 = 99,000.70 : x
  2. Step 2: Convert to fraction form
    99,000.70/138,950.90 = 99,000.70/x
  3. Step 3: Cross multiply
    99,000.70x = 138,950.90 × 99,000.70
  4. Step 4: Simplify right side
    99,000.70x = 13,756,236,365.63
  5. Step 5: Solve for x
    x = 13,756,236,365.63/99,000.70
  6. Step 6: Final answer
    x = 138,950.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.