Home / 155,650.21-214,807.75-86,750.39

Finding the Fourth Proportional to 155,650.21, 214,807.75 and 86,750.39

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Solution

The fourth proportional to 155,650.21, 214,807.75 and 86,750.39 is: 119,721.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,650.21 : 214,807.75 = 86,750.39 : x
  2. Step 2: Convert to fraction form
    155,650.21/214,807.75 = 86,750.39/x
  3. Step 3: Cross multiply
    155,650.21x = 214,807.75 × 86,750.39
  4. Step 4: Simplify right side
    155,650.21x = 18,634,656,407.67
  5. Step 5: Solve for x
    x = 18,634,656,407.67/155,650.21
  6. Step 6: Final answer
    x = 119,721.37

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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.