Home / 155,405,047.63-214,459,650.71-85,791,000.55

Finding the Fourth Proportional to 155,405,047.63, 214,459,650.71 and 85,791,000.55

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Solution

The fourth proportional to 155,405,047.63, 214,459,650.71 and 85,791,000.55 is: 118,391,958.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,405,047.63 : 214,459,650.71 = 85,791,000.55 : x
  2. Step 2: Convert to fraction form
    155,405,047.63/214,459,650.71 = 85,791,000.55/x
  3. Step 3: Cross multiply
    155,405,047.63x = 214,459,650.71 × 85,791,000.55
  4. Step 4: Simplify right side
    155,405,047.63x = 18,398,708,012,014,416
  5. Step 5: Solve for x
    x = 18,398,708,012,014,416/155,405,047.63
  6. Step 6: Final answer
    x = 118,391,958.90

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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.