Home / 185,921.96-256,477.87-121,428.98

Finding the Fourth Proportional to 185,921.96, 256,477.87 and 121,428.98

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Solution

The fourth proportional to 185,921.96, 256,477.87 and 121,428.98 is: 167,510.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,921.96 : 256,477.87 = 121,428.98 : x
  2. Step 2: Convert to fraction form
    185,921.96/256,477.87 = 121,428.98/x
  3. Step 3: Cross multiply
    185,921.96x = 256,477.87 × 121,428.98
  4. Step 4: Simplify right side
    185,921.96x = 31,143,847,420.55
  5. Step 5: Solve for x
    x = 31,143,847,420.55/185,921.96
  6. Step 6: Final answer
    x = 167,510.32

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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.