Home / 157,731-236,561.13-45,386.19

Finding the Fourth Proportional to 157,731, 236,561.13 and 45,386.19

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Solution

The fourth proportional to 157,731, 236,561.13 and 45,386.19 is: 68,069.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,731 : 236,561.13 = 45,386.19 : x
  2. Step 2: Convert to fraction form
    157,731/236,561.13 = 45,386.19/x
  3. Step 3: Cross multiply
    157,731x = 236,561.13 × 45,386.19
  4. Step 4: Simplify right side
    157,731x = 10,736,608,392.79
  5. Step 5: Solve for x
    x = 10,736,608,392.79/157,731
  6. Step 6: Final answer
    x = 68,069.11

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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.