Home / 155,975.83-214,774.81-128,650.34

Finding the Fourth Proportional to 155,975.83, 214,774.81 and 128,650.34

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Solution

The fourth proportional to 155,975.83, 214,774.81 and 128,650.34 is: 177,148.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,975.83 : 214,774.81 = 128,650.34 : x
  2. Step 2: Convert to fraction form
    155,975.83/214,774.81 = 128,650.34/x
  3. Step 3: Cross multiply
    155,975.83x = 214,774.81 × 128,650.34
  4. Step 4: Simplify right side
    155,975.83x = 27,630,852,545.25
  5. Step 5: Solve for x
    x = 27,630,852,545.25/155,975.83
  6. Step 6: Final answer
    x = 177,148.30

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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.