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Finding the Fourth Proportional to 103,644.63, 143,066.52 and 61,203.33

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Solution

The fourth proportional to 103,644.63, 143,066.52 and 61,203.33 is: 84,482.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,644.63 : 143,066.52 = 61,203.33 : x
  2. Step 2: Convert to fraction form
    103,644.63/143,066.52 = 61,203.33/x
  3. Step 3: Cross multiply
    103,644.63x = 143,066.52 × 61,203.33
  4. Step 4: Simplify right side
    103,644.63x = 8,756,147,435.51
  5. Step 5: Solve for x
    x = 8,756,147,435.51/103,644.63
  6. Step 6: Final answer
    x = 84,482.40

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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.