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Finding the Fourth Proportional to 164,555.10, 246,775.05 and 85,643.10

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Solution

The fourth proportional to 164,555.10, 246,775.05 and 85,643.10 is: 128,434.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,555.10 : 246,775.05 = 85,643.10 : x
  2. Step 2: Convert to fraction form
    164,555.10/246,775.05 = 85,643.10/x
  3. Step 3: Cross multiply
    164,555.10x = 246,775.05 × 85,643.10
  4. Step 4: Simplify right side
    164,555.10x = 21,134,580,284.66
  5. Step 5: Solve for x
    x = 21,134,580,284.66/164,555.10
  6. Step 6: Final answer
    x = 128,434.67

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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.