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Finding the Fourth Proportional to 141,562.61, 195,351.51 and 77,894.45

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Solution

The fourth proportional to 141,562.61, 195,351.51 and 77,894.45 is: 107,491.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,562.61 : 195,351.51 = 77,894.45 : x
  2. Step 2: Convert to fraction form
    141,562.61/195,351.51 = 77,894.45/x
  3. Step 3: Cross multiply
    141,562.61x = 195,351.51 × 77,894.45
  4. Step 4: Simplify right side
    141,562.61x = 15,216,798,038.65
  5. Step 5: Solve for x
    x = 15,216,798,038.65/141,562.61
  6. Step 6: Final answer
    x = 107,491.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.