Home / 125,840.21-173,663.60-72,135.38

Finding the Fourth Proportional to 125,840.21, 173,663.60 and 72,135.38

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Solution

The fourth proportional to 125,840.21, 173,663.60 and 72,135.38 is: 99,549.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,840.21 : 173,663.60 = 72,135.38 : x
  2. Step 2: Convert to fraction form
    125,840.21/173,663.60 = 72,135.38/x
  3. Step 3: Cross multiply
    125,840.21x = 173,663.60 × 72,135.38
  4. Step 4: Simplify right side
    125,840.21x = 12,527,289,851.65
  5. Step 5: Solve for x
    x = 12,527,289,851.65/125,840.21
  6. Step 6: Final answer
    x = 99,549.19

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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.