Home / 115,240.63-172,859.23-70,275.20

Finding the Fourth Proportional to 115,240.63, 172,859.23 and 70,275.20

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Solution

The fourth proportional to 115,240.63, 172,859.23 and 70,275.20 is: 105,411.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,240.63 : 172,859.23 = 70,275.20 : x
  2. Step 2: Convert to fraction form
    115,240.63/172,859.23 = 70,275.20/x
  3. Step 3: Cross multiply
    115,240.63x = 172,859.23 × 70,275.20
  4. Step 4: Simplify right side
    115,240.63x = 12,147,716,960.10
  5. Step 5: Solve for x
    x = 12,147,716,960.10/115,240.63
  6. Step 6: Final answer
    x = 105,411.75

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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.