Home / 125,038.55-187,155.09-82,379.19

Finding the Fourth Proportional to 125,038.55, 187,155.09 and 82,379.19

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Solution

The fourth proportional to 125,038.55, 187,155.09 and 82,379.19 is: 123,303.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,038.55 : 187,155.09 = 82,379.19 : x
  2. Step 2: Convert to fraction form
    125,038.55/187,155.09 = 82,379.19/x
  3. Step 3: Cross multiply
    125,038.55x = 187,155.09 × 82,379.19
  4. Step 4: Simplify right side
    125,038.55x = 15,417,684,718.58
  5. Step 5: Solve for x
    x = 15,417,684,718.58/125,038.55
  6. Step 6: Final answer
    x = 123,303.46

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1.5x scale

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.