Home / 445,688.86-668,580.15-130,146.65

Finding the Fourth Proportional to 445,688.86, 668,580.15 and 130,146.65

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Solution

The fourth proportional to 445,688.86, 668,580.15 and 130,146.65 is: 195,233.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,688.86 : 668,580.15 = 130,146.65 : x
  2. Step 2: Convert to fraction form
    445,688.86/668,580.15 = 130,146.65/x
  3. Step 3: Cross multiply
    445,688.86x = 668,580.15 × 130,146.65
  4. Step 4: Simplify right side
    445,688.86x = 87,013,466,779.00
  5. Step 5: Solve for x
    x = 87,013,466,779.00/445,688.86
  6. Step 6: Final answer
    x = 195,233.66

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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.