Home / 123,325.08-170,170.36-72,318.57

Finding the Fourth Proportional to 123,325.08, 170,170.36 and 72,318.57

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Solution

The fourth proportional to 123,325.08, 170,170.36 and 72,318.57 is: 99,788.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,325.08 : 170,170.36 = 72,318.57 : x
  2. Step 2: Convert to fraction form
    123,325.08/170,170.36 = 72,318.57/x
  3. Step 3: Cross multiply
    123,325.08x = 170,170.36 × 72,318.57
  4. Step 4: Simplify right side
    123,325.08x = 12,306,477,091.59
  5. Step 5: Solve for x
    x = 12,306,477,091.59/123,325.08
  6. Step 6: Final answer
    x = 99,788.92

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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.