Home / 120,985.12-181,514.60-61,862.32

Finding the Fourth Proportional to 120,985.12, 181,514.60 and 61,862.32

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Solution

The fourth proportional to 120,985.12, 181,514.60 and 61,862.32 is: 92,812.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,985.12 : 181,514.60 = 61,862.32 : x
  2. Step 2: Convert to fraction form
    120,985.12/181,514.60 = 61,862.32/x
  3. Step 3: Cross multiply
    120,985.12x = 181,514.60 × 61,862.32
  4. Step 4: Simplify right side
    120,985.12x = 11,228,913,052.99
  5. Step 5: Solve for x
    x = 11,228,913,052.99/120,985.12
  6. Step 6: Final answer
    x = 92,812.35

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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.