Home / 150,312.61-207,379.91-85,735.45

Finding the Fourth Proportional to 150,312.61, 207,379.91 and 85,735.45

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Solution

The fourth proportional to 150,312.61, 207,379.91 and 85,735.45 is: 118,285.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,312.61 : 207,379.91 = 85,735.45 : x
  2. Step 2: Convert to fraction form
    150,312.61/207,379.91 = 85,735.45/x
  3. Step 3: Cross multiply
    150,312.61x = 207,379.91 × 85,735.45
  4. Step 4: Simplify right side
    150,312.61x = 17,779,809,211.86
  5. Step 5: Solve for x
    x = 17,779,809,211.86/150,312.61
  6. Step 6: Final answer
    x = 118,285.55

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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.