Home / 136,666.45-205,038.08-66,548.05

Finding the Fourth Proportional to 136,666.45, 205,038.08 and 66,548.05

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Solution

The fourth proportional to 136,666.45, 205,038.08 and 66,548.05 is: 99,840.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,666.45 : 205,038.08 = 66,548.05 : x
  2. Step 2: Convert to fraction form
    136,666.45/205,038.08 = 66,548.05/x
  3. Step 3: Cross multiply
    136,666.45x = 205,038.08 × 66,548.05
  4. Step 4: Simplify right side
    136,666.45x = 13,644,884,067.00
  5. Step 5: Solve for x
    x = 13,644,884,067.00/136,666.45
  6. Step 6: Final answer
    x = 99,840.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.