Home / 156,937.10-235,435.94-66,978.50

Finding the Fourth Proportional to 156,937.10, 235,435.94 and 66,978.50

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Solution

The fourth proportional to 156,937.10, 235,435.94 and 66,978.50 is: 100,480.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,937.10 : 235,435.94 = 66,978.50 : x
  2. Step 2: Convert to fraction form
    156,937.10/235,435.94 = 66,978.50/x
  3. Step 3: Cross multiply
    156,937.10x = 235,435.94 × 66,978.50
  4. Step 4: Simplify right side
    156,937.10x = 15,769,144,595.22
  5. Step 5: Solve for x
    x = 15,769,144,595.22/156,937.10
  6. Step 6: Final answer
    x = 100,480.67

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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.