Home / 125,459.64-188,242.08-78,114.36

Finding the Fourth Proportional to 125,459.64, 188,242.08 and 78,114.36

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Solution

The fourth proportional to 125,459.64, 188,242.08 and 78,114.36 is: 117,204.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,459.64 : 188,242.08 = 78,114.36 : x
  2. Step 2: Convert to fraction form
    125,459.64/188,242.08 = 78,114.36/x
  3. Step 3: Cross multiply
    125,459.64x = 188,242.08 × 78,114.36
  4. Step 4: Simplify right side
    125,459.64x = 14,704,409,604.27
  5. Step 5: Solve for x
    x = 14,704,409,604.27/125,459.64
  6. Step 6: Final answer
    x = 117,204.30

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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.