Home / 103,115.61-142,286.90-62,814.74

Finding the Fourth Proportional to 103,115.61, 142,286.90 and 62,814.74

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Solution

The fourth proportional to 103,115.61, 142,286.90 and 62,814.74 is: 86,676.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,115.61 : 142,286.90 = 62,814.74 : x
  2. Step 2: Convert to fraction form
    103,115.61/142,286.90 = 62,814.74/x
  3. Step 3: Cross multiply
    103,115.61x = 142,286.90 × 62,814.74
  4. Step 4: Simplify right side
    103,115.61x = 8,937,713,603.40
  5. Step 5: Solve for x
    x = 8,937,713,603.40/103,115.61
  6. Step 6: Final answer
    x = 86,676.63

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1.5x scale

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.