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Finding the Fourth Proportional to 148,897.40, 207,989.80 and 148,897.40

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Solution

The fourth proportional to 148,897.40, 207,989.80 and 148,897.40 is: 207,989.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,897.40 : 207,989.80 = 148,897.40 : x
  2. Step 2: Convert to fraction form
    148,897.40/207,989.80 = 148,897.40/x
  3. Step 3: Cross multiply
    148,897.40x = 207,989.80 × 148,897.40
  4. Step 4: Simplify right side
    148,897.40x = 30,969,140,446.52
  5. Step 5: Solve for x
    x = 30,969,140,446.52/148,897.40
  6. Step 6: Final answer
    x = 207,989.80

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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.