Home / 155,135.48-214,089.86-86,231.40

Finding the Fourth Proportional to 155,135.48, 214,089.86 and 86,231.40

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Solution

The fourth proportional to 155,135.48, 214,089.86 and 86,231.40 is: 119,000.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,135.48 : 214,089.86 = 86,231.40 : x
  2. Step 2: Convert to fraction form
    155,135.48/214,089.86 = 86,231.40/x
  3. Step 3: Cross multiply
    155,135.48x = 214,089.86 × 86,231.40
  4. Step 4: Simplify right side
    155,135.48x = 18,461,268,353.60
  5. Step 5: Solve for x
    x = 18,461,268,353.60/155,135.48
  6. Step 6: Final answer
    x = 119,000.94

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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.