Home / 256,152.10-384,191.70-87,680.20

Finding the Fourth Proportional to 256,152.10, 384,191.70 and 87,680.20

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Solution

The fourth proportional to 256,152.10, 384,191.70 and 87,680.20 is: 131,507.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,152.10 : 384,191.70 = 87,680.20 : x
  2. Step 2: Convert to fraction form
    256,152.10/384,191.70 = 87,680.20/x
  3. Step 3: Cross multiply
    256,152.10x = 384,191.70 × 87,680.20
  4. Step 4: Simplify right side
    256,152.10x = 33,686,005,094.34
  5. Step 5: Solve for x
    x = 33,686,005,094.34/256,152.10
  6. Step 6: Final answer
    x = 131,507.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.