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Finding the Fourth Proportional to 125,925, 173,813.13 and 100,607.64

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Solution

The fourth proportional to 125,925, 173,813.13 and 100,607.64 is: 138,867.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,925 : 173,813.13 = 100,607.64 : x
  2. Step 2: Convert to fraction form
    125,925/173,813.13 = 100,607.64/x
  3. Step 3: Cross multiply
    125,925x = 173,813.13 × 100,607.64
  4. Step 4: Simplify right side
    125,925x = 17,486,928,810.31
  5. Step 5: Solve for x
    x = 17,486,928,810.31/125,925
  6. Step 6: Final answer
    x = 138,867.81

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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.