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Finding the Fourth Proportional to 141,951.81, 212,927.81 and 79,666.05

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Solution

The fourth proportional to 141,951.81, 212,927.81 and 79,666.05 is: 119,499.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,951.81 : 212,927.81 = 79,666.05 : x
  2. Step 2: Convert to fraction form
    141,951.81/212,927.81 = 79,666.05/x
  3. Step 3: Cross multiply
    141,951.81x = 212,927.81 × 79,666.05
  4. Step 4: Simplify right side
    141,951.81x = 16,963,117,159.52
  5. Step 5: Solve for x
    x = 16,963,117,159.52/141,951.81
  6. Step 6: Final answer
    x = 119,499.13

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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.