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Finding the Fourth Proportional to 148,931.40, 208,037.40 and 148,931.40

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Solution

The fourth proportional to 148,931.40, 208,037.40 and 148,931.40 is: 208,037.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,931.40 : 208,037.40 = 148,931.40 : x
  2. Step 2: Convert to fraction form
    148,931.40/208,037.40 = 148,931.40/x
  3. Step 3: Cross multiply
    148,931.40x = 208,037.40 × 148,931.40
  4. Step 4: Simplify right side
    148,931.40x = 30,983,301,234.36
  5. Step 5: Solve for x
    x = 30,983,301,234.36/148,931.40
  6. Step 6: Final answer
    x = 208,037.40

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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.