Home / 111,342.50-166,595.22-78,127.40

Finding the Fourth Proportional to 111,342.50, 166,595.22 and 78,127.40

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Solution

The fourth proportional to 111,342.50, 166,595.22 and 78,127.40 is: 116,897.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,342.50 : 166,595.22 = 78,127.40 : x
  2. Step 2: Convert to fraction form
    111,342.50/166,595.22 = 78,127.40/x
  3. Step 3: Cross multiply
    111,342.50x = 166,595.22 × 78,127.40
  4. Step 4: Simplify right side
    111,342.50x = 13,015,651,391.03
  5. Step 5: Solve for x
    x = 13,015,651,391.03/111,342.50
  6. Step 6: Final answer
    x = 116,897.42

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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.