Home / 136,762.86-205,217.96-66,642.18

Finding the Fourth Proportional to 136,762.86, 205,217.96 and 66,642.18

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Solution

The fourth proportional to 136,762.86, 205,217.96 and 66,642.18 is: 99,999.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,762.86 : 205,217.96 = 66,642.18 : x
  2. Step 2: Convert to fraction form
    136,762.86/205,217.96 = 66,642.18/x
  3. Step 3: Cross multiply
    136,762.86x = 205,217.96 × 66,642.18
  4. Step 4: Simplify right side
    136,762.86x = 13,676,171,126.77
  5. Step 5: Solve for x
    x = 13,676,171,126.77/136,762.86
  6. Step 6: Final answer
    x = 99,999.16

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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.