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Finding the Fourth Proportional to 141,495, 212,243.94 and 42,999

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Solution

The fourth proportional to 141,495, 212,243.94 and 42,999 is: 64,498.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,495 : 212,243.94 = 42,999 : x
  2. Step 2: Convert to fraction form
    141,495/212,243.94 = 42,999/x
  3. Step 3: Cross multiply
    141,495x = 212,243.94 × 42,999
  4. Step 4: Simplify right side
    141,495x = 9,126,277,176.06
  5. Step 5: Solve for x
    x = 9,126,277,176.06/141,495
  6. Step 6: Final answer
    x = 64,498.94

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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.