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Finding the Fourth Proportional to 103,914.79, 143,412.70 and 63,075.70

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Solution

The fourth proportional to 103,914.79, 143,412.70 and 63,075.70 is: 87,050.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,914.79 : 143,412.70 = 63,075.70 : x
  2. Step 2: Convert to fraction form
    103,914.79/143,412.70 = 63,075.70/x
  3. Step 3: Cross multiply
    103,914.79x = 143,412.70 × 63,075.70
  4. Step 4: Simplify right side
    103,914.79x = 9,045,856,157.81
  5. Step 5: Solve for x
    x = 9,045,856,157.81/103,914.79
  6. Step 6: Final answer
    x = 87,050.71

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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.