Home / 102,730.61-141,771.27-57,408.71

Finding the Fourth Proportional to 102,730.61, 141,771.27 and 57,408.71

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Solution

The fourth proportional to 102,730.61, 141,771.27 and 57,408.71 is: 79,225.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,730.61 : 141,771.27 = 57,408.71 : x
  2. Step 2: Convert to fraction form
    102,730.61/141,771.27 = 57,408.71/x
  3. Step 3: Cross multiply
    102,730.61x = 141,771.27 × 57,408.71
  4. Step 4: Simplify right side
    102,730.61x = 8,138,905,232.19
  5. Step 5: Solve for x
    x = 8,138,905,232.19/102,730.61
  6. Step 6: Final answer
    x = 79,225.71

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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.