Home / 128,962.08-177,968.34-71,603.46

Finding the Fourth Proportional to 128,962.08, 177,968.34 and 71,603.46

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Solution

The fourth proportional to 128,962.08, 177,968.34 and 71,603.46 is: 98,813.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,962.08 : 177,968.34 = 71,603.46 : x
  2. Step 2: Convert to fraction form
    128,962.08/177,968.34 = 71,603.46/x
  3. Step 3: Cross multiply
    128,962.08x = 177,968.34 × 71,603.46
  4. Step 4: Simplify right side
    128,962.08x = 12,743,148,914.46
  5. Step 5: Solve for x
    x = 12,743,148,914.46/128,962.08
  6. Step 6: Final answer
    x = 98,813.15

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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.