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Finding the Fourth Proportional to 105,018.87, 157,495.95 and 30,118.89

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Solution

The fourth proportional to 105,018.87, 157,495.95 and 30,118.89 is: 45,169.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,018.87 : 157,495.95 = 30,118.89 : x
  2. Step 2: Convert to fraction form
    105,018.87/157,495.95 = 30,118.89/x
  3. Step 3: Cross multiply
    105,018.87x = 157,495.95 × 30,118.89
  4. Step 4: Simplify right side
    105,018.87x = 4,743,603,193.50
  5. Step 5: Solve for x
    x = 4,743,603,193.50/105,018.87
  6. Step 6: Final answer
    x = 45,169.06

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1.5x scale

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.