Home / 186,298.68-257,085.19-105,721.40

Finding the Fourth Proportional to 186,298.68, 257,085.19 and 105,721.40

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Solution

The fourth proportional to 186,298.68, 257,085.19 and 105,721.40 is: 145,891.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,298.68 : 257,085.19 = 105,721.40 : x
  2. Step 2: Convert to fraction form
    186,298.68/257,085.19 = 105,721.40/x
  3. Step 3: Cross multiply
    186,298.68x = 257,085.19 × 105,721.40
  4. Step 4: Simplify right side
    186,298.68x = 27,179,406,980.93
  5. Step 5: Solve for x
    x = 27,179,406,980.93/186,298.68
  6. Step 6: Final answer
    x = 145,891.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.