Home / 152,144.21-209,908.02-87,612.06

Finding the Fourth Proportional to 152,144.21, 209,908.02 and 87,612.06

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Solution

The fourth proportional to 152,144.21, 209,908.02 and 87,612.06 is: 120,875.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,144.21 : 209,908.02 = 87,612.06 : x
  2. Step 2: Convert to fraction form
    152,144.21/209,908.02 = 87,612.06/x
  3. Step 3: Cross multiply
    152,144.21x = 209,908.02 × 87,612.06
  4. Step 4: Simplify right side
    152,144.21x = 18,390,474,042.72
  5. Step 5: Solve for x
    x = 18,390,474,042.72/152,144.21
  6. Step 6: Final answer
    x = 120,875.28

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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.