Home / 145,368.07-217,853.90-70,338.48

Finding the Fourth Proportional to 145,368.07, 217,853.90 and 70,338.48

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Solution

The fourth proportional to 145,368.07, 217,853.90 and 70,338.48 is: 105,411.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,368.07 : 217,853.90 = 70,338.48 : x
  2. Step 2: Convert to fraction form
    145,368.07/217,853.90 = 70,338.48/x
  3. Step 3: Cross multiply
    145,368.07x = 217,853.90 × 70,338.48
  4. Step 4: Simplify right side
    145,368.07x = 15,323,511,678.85
  5. Step 5: Solve for x
    x = 15,323,511,678.85/145,368.07
  6. Step 6: Final answer
    x = 105,411.81

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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.