Home / 128,024.56-191,995.50-42,612.64

Finding the Fourth Proportional to 128,024.56, 191,995.50 and 42,612.64

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Solution

The fourth proportional to 128,024.56, 191,995.50 and 42,612.64 is: 63,905.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,024.56 : 191,995.50 = 42,612.64 : x
  2. Step 2: Convert to fraction form
    128,024.56/191,995.50 = 42,612.64/x
  3. Step 3: Cross multiply
    128,024.56x = 191,995.50 × 42,612.64
  4. Step 4: Simplify right side
    128,024.56x = 8,181,435,123.12
  5. Step 5: Solve for x
    x = 8,181,435,123.12/128,024.56
  6. Step 6: Final answer
    x = 63,905.20

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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.