Home / 155,730.89-214,913.10-87,748.67

Finding the Fourth Proportional to 155,730.89, 214,913.10 and 87,748.67

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Solution

The fourth proportional to 155,730.89, 214,913.10 and 87,748.67 is: 121,095.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,730.89 : 214,913.10 = 87,748.67 : x
  2. Step 2: Convert to fraction form
    155,730.89/214,913.10 = 87,748.67/x
  3. Step 3: Cross multiply
    155,730.89x = 214,913.10 × 87,748.67
  4. Step 4: Simplify right side
    155,730.89x = 18,858,337,616.01
  5. Step 5: Solve for x
    x = 18,858,337,616.01/155,730.89
  6. Step 6: Final answer
    x = 121,095.68

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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.