Home / 102,912.15-142,025.36-57,595.35

Finding the Fourth Proportional to 102,912.15, 142,025.36 and 57,595.35

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Solution

The fourth proportional to 102,912.15, 142,025.36 and 57,595.35 is: 79,485.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,912.15 : 142,025.36 = 57,595.35 : x
  2. Step 2: Convert to fraction form
    102,912.15/142,025.36 = 57,595.35/x
  3. Step 3: Cross multiply
    102,912.15x = 142,025.36 × 57,595.35
  4. Step 4: Simplify right side
    102,912.15x = 8,180,000,030.10
  5. Step 5: Solve for x
    x = 8,180,000,030.10/102,912.15
  6. Step 6: Final answer
    x = 79,485.27

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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.