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Finding the Fourth Proportional to 119,643.19, 165,114.10 and 68,655.51

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Solution

The fourth proportional to 119,643.19, 165,114.10 and 68,655.51 is: 94,748.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,643.19 : 165,114.10 = 68,655.51 : x
  2. Step 2: Convert to fraction form
    119,643.19/165,114.10 = 68,655.51/x
  3. Step 3: Cross multiply
    119,643.19x = 165,114.10 × 68,655.51
  4. Step 4: Simplify right side
    119,643.19x = 11,335,992,558.22
  5. Step 5: Solve for x
    x = 11,335,992,558.22/119,643.19
  6. Step 6: Final answer
    x = 94,748.33

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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.