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Finding the Fourth Proportional to 104,256.84, 143,870.94 and 61,790.16

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Solution

The fourth proportional to 104,256.84, 143,870.94 and 61,790.16 is: 85,268.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,256.84 : 143,870.94 = 61,790.16 : x
  2. Step 2: Convert to fraction form
    104,256.84/143,870.94 = 61,790.16/x
  3. Step 3: Cross multiply
    104,256.84x = 143,870.94 × 61,790.16
  4. Step 4: Simplify right side
    104,256.84x = 8,889,808,401.95
  5. Step 5: Solve for x
    x = 8,889,808,401.95/104,256.84
  6. Step 6: Final answer
    x = 85,268.35

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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.