Home / 155,404.07-214,476.60-87,423.90

Finding the Fourth Proportional to 155,404.07, 214,476.60 and 87,423.90

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Solution

The fourth proportional to 155,404.07, 214,476.60 and 87,423.90 is: 120,655.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,404.07 : 214,476.60 = 87,423.90 : x
  2. Step 2: Convert to fraction form
    155,404.07/214,476.60 = 87,423.90/x
  3. Step 3: Cross multiply
    155,404.07x = 214,476.60 × 87,423.90
  4. Step 4: Simplify right side
    155,404.07x = 18,750,380,830.74
  5. Step 5: Solve for x
    x = 18,750,380,830.74/155,404.07
  6. Step 6: Final answer
    x = 120,655.67

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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.