Home / 142,405.06-213,639.99-75,810.10

Finding the Fourth Proportional to 142,405.06, 213,639.99 and 75,810.10

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Solution

The fourth proportional to 142,405.06, 213,639.99 and 75,810.10 is: 113,732.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,405.06 : 213,639.99 = 75,810.10 : x
  2. Step 2: Convert to fraction form
    142,405.06/213,639.99 = 75,810.10/x
  3. Step 3: Cross multiply
    142,405.06x = 213,639.99 × 75,810.10
  4. Step 4: Simplify right side
    142,405.06x = 16,196,069,005.90
  5. Step 5: Solve for x
    x = 16,196,069,005.90/142,405.06
  6. Step 6: Final answer
    x = 113,732.40

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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.