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Finding the Fourth Proportional to 141,854, 212,815.56 and 43,358

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Solution

The fourth proportional to 141,854, 212,815.56 and 43,358 is: 65,047.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,854 : 212,815.56 = 43,358 : x
  2. Step 2: Convert to fraction form
    141,854/212,815.56 = 43,358/x
  3. Step 3: Cross multiply
    141,854x = 212,815.56 × 43,358
  4. Step 4: Simplify right side
    141,854x = 9,227,257,050.48
  5. Step 5: Solve for x
    x = 9,227,257,050.48/141,854
  6. Step 6: Final answer
    x = 65,047.56

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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.