Home / 155,411.34-214,467.33-87,428.34

Finding the Fourth Proportional to 155,411.34, 214,467.33 and 87,428.34

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Solution

The fourth proportional to 155,411.34, 214,467.33 and 87,428.34 is: 120,650.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,411.34 : 214,467.33 = 87,428.34 : x
  2. Step 2: Convert to fraction form
    155,411.34/214,467.33 = 87,428.34/x
  3. Step 3: Cross multiply
    155,411.34x = 214,467.33 × 87,428.34
  4. Step 4: Simplify right side
    155,411.34x = 18,750,522,646.13
  5. Step 5: Solve for x
    x = 18,750,522,646.13/155,411.34
  6. Step 6: Final answer
    x = 120,650.93

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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.