Home / 105,266.50-145,157.12-69,410.64

Finding the Fourth Proportional to 105,266.50, 145,157.12 and 69,410.64

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Solution

The fourth proportional to 105,266.50, 145,157.12 and 69,410.64 is: 95,713.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,266.50 : 145,157.12 = 69,410.64 : x
  2. Step 2: Convert to fraction form
    105,266.50/145,157.12 = 69,410.64/x
  3. Step 3: Cross multiply
    105,266.50x = 145,157.12 × 69,410.64
  4. Step 4: Simplify right side
    105,266.50x = 10,075,448,599.76
  5. Step 5: Solve for x
    x = 10,075,448,599.76/105,266.50
  6. Step 6: Final answer
    x = 95,713.72

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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.