Home / 155,410.48-214,467.28-91,779.64

Finding the Fourth Proportional to 155,410.48, 214,467.28 and 91,779.64

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Solution

The fourth proportional to 155,410.48, 214,467.28 and 91,779.64 is: 126,656.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,410.48 : 214,467.28 = 91,779.64 : x
  2. Step 2: Convert to fraction form
    155,410.48/214,467.28 = 91,779.64/x
  3. Step 3: Cross multiply
    155,410.48x = 214,467.28 × 91,779.64
  4. Step 4: Simplify right side
    155,410.48x = 19,683,729,750.18
  5. Step 5: Solve for x
    x = 19,683,729,750.18/155,410.48
  6. Step 6: Final answer
    x = 126,656.39

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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.