Home / 120,814.45-166,718.53-72,443.08

Finding the Fourth Proportional to 120,814.45, 166,718.53 and 72,443.08

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Solution

The fourth proportional to 120,814.45, 166,718.53 and 72,443.08 is: 99,968.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,814.45 : 166,718.53 = 72,443.08 : x
  2. Step 2: Convert to fraction form
    120,814.45/166,718.53 = 72,443.08/x
  3. Step 3: Cross multiply
    120,814.45x = 166,718.53 × 72,443.08
  4. Step 4: Simplify right side
    120,814.45x = 12,077,603,806.27
  5. Step 5: Solve for x
    x = 12,077,603,806.27/120,814.45
  6. Step 6: Final answer
    x = 99,968.21

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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.