Home / 145,318.28-217,898.38-45,435.40

Finding the Fourth Proportional to 145,318.28, 217,898.38 and 45,435.40

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Solution

The fourth proportional to 145,318.28, 217,898.38 and 45,435.40 is: 68,128.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,318.28 : 217,898.38 = 45,435.40 : x
  2. Step 2: Convert to fraction form
    145,318.28/217,898.38 = 45,435.40/x
  3. Step 3: Cross multiply
    145,318.28x = 217,898.38 × 45,435.40
  4. Step 4: Simplify right side
    145,318.28x = 9,900,300,054.65
  5. Step 5: Solve for x
    x = 9,900,300,054.65/145,318.28
  6. Step 6: Final answer
    x = 68,128.39

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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.