Home / 115,668.81-172,449.51-112,760.10

Finding the Fourth Proportional to 115,668.81, 172,449.51 and 112,760.10

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Solution

The fourth proportional to 115,668.81, 172,449.51 and 112,760.10 is: 168,112.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,668.81 : 172,449.51 = 112,760.10 : x
  2. Step 2: Convert to fraction form
    115,668.81/172,449.51 = 112,760.10/x
  3. Step 3: Cross multiply
    115,668.81x = 172,449.51 × 112,760.10
  4. Step 4: Simplify right side
    115,668.81x = 19,445,423,569.70
  5. Step 5: Solve for x
    x = 19,445,423,569.70/115,668.81
  6. Step 6: Final answer
    x = 168,112.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.