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Finding the Fourth Proportional to 125,999.70, 178,499.67 and 125,999.70

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Solution

The fourth proportional to 125,999.70, 178,499.67 and 125,999.70 is: 178,499.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,999.70 : 178,499.67 = 125,999.70 : x
  2. Step 2: Convert to fraction form
    125,999.70/178,499.67 = 125,999.70/x
  3. Step 3: Cross multiply
    125,999.70x = 178,499.67 × 125,999.70
  4. Step 4: Simplify right side
    125,999.70x = 22,490,904,870.10
  5. Step 5: Solve for x
    x = 22,490,904,870.10/125,999.70
  6. Step 6: Final answer
    x = 178,499.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.