Home / 145,326.72-217,673.60-70,288.58

Finding the Fourth Proportional to 145,326.72, 217,673.60 and 70,288.58

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Solution

The fourth proportional to 145,326.72, 217,673.60 and 70,288.58 is: 105,279.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,326.72 : 217,673.60 = 70,288.58 : x
  2. Step 2: Convert to fraction form
    145,326.72/217,673.60 = 70,288.58/x
  3. Step 3: Cross multiply
    145,326.72x = 217,673.60 × 70,288.58
  4. Step 4: Simplify right side
    145,326.72x = 15,299,968,247.49
  5. Step 5: Solve for x
    x = 15,299,968,247.49/145,326.72
  6. Step 6: Final answer
    x = 105,279.80

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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.