Home / 145,131.36-217,528.02-70,145.88

Finding the Fourth Proportional to 145,131.36, 217,528.02 and 70,145.88

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Solution

The fourth proportional to 145,131.36, 217,528.02 and 70,145.88 is: 105,137.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,131.36 : 217,528.02 = 70,145.88 : x
  2. Step 2: Convert to fraction form
    145,131.36/217,528.02 = 70,145.88/x
  3. Step 3: Cross multiply
    145,131.36x = 217,528.02 × 70,145.88
  4. Step 4: Simplify right side
    145,131.36x = 15,258,694,387.56
  5. Step 5: Solve for x
    x = 15,258,694,387.56/145,131.36
  6. Step 6: Final answer
    x = 105,137.13

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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.