Home / 151,638.02-209,192.80-87,938.90

Finding the Fourth Proportional to 151,638.02, 209,192.80 and 87,938.90

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Solution

The fourth proportional to 151,638.02, 209,192.80 and 87,938.90 is: 121,316.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,638.02 : 209,192.80 = 87,938.90 : x
  2. Step 2: Convert to fraction form
    151,638.02/209,192.80 = 87,938.90/x
  3. Step 3: Cross multiply
    151,638.02x = 209,192.80 × 87,938.90
  4. Step 4: Simplify right side
    151,638.02x = 18,396,184,719.92
  5. Step 5: Solve for x
    x = 18,396,184,719.92/151,638.02
  6. Step 6: Final answer
    x = 121,316.44

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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.