Home / 155,420.54-214,475.54-87,441.30

Finding the Fourth Proportional to 155,420.54, 214,475.54 and 87,441.30

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Solution

The fourth proportional to 155,420.54, 214,475.54 and 87,441.30 is: 120,666.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,420.54 : 214,475.54 = 87,441.30 : x
  2. Step 2: Convert to fraction form
    155,420.54/214,475.54 = 87,441.30/x
  3. Step 3: Cross multiply
    155,420.54x = 214,475.54 × 87,441.30
  4. Step 4: Simplify right side
    155,420.54x = 18,754,020,035.80
  5. Step 5: Solve for x
    x = 18,754,020,035.80/155,420.54
  6. Step 6: Final answer
    x = 120,666.29

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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.