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Finding the Fourth Proportional to 133,931.80, 200,897.70 and 40,425.40

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Solution

The fourth proportional to 133,931.80, 200,897.70 and 40,425.40 is: 60,638.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,931.80 : 200,897.70 = 40,425.40 : x
  2. Step 2: Convert to fraction form
    133,931.80/200,897.70 = 40,425.40/x
  3. Step 3: Cross multiply
    133,931.80x = 200,897.70 × 40,425.40
  4. Step 4: Simplify right side
    133,931.80x = 8,121,369,881.58
  5. Step 5: Solve for x
    x = 8,121,369,881.58/133,931.80
  6. Step 6: Final answer
    x = 60,638.10

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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.