Home / 120,256.12-165,953.64-66,543.40

Finding the Fourth Proportional to 120,256.12, 165,953.64 and 66,543.40

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Solution

The fourth proportional to 120,256.12, 165,953.64 and 66,543.40 is: 91,830.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,256.12 : 165,953.64 = 66,543.40 : x
  2. Step 2: Convert to fraction form
    120,256.12/165,953.64 = 66,543.40/x
  3. Step 3: Cross multiply
    120,256.12x = 165,953.64 × 66,543.40
  4. Step 4: Simplify right side
    120,256.12x = 11,043,119,447.98
  5. Step 5: Solve for x
    x = 11,043,119,447.98/120,256.12
  6. Step 6: Final answer
    x = 91,830.00

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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.