Home / 157,081.07-216,776.49-85,465.70

Finding the Fourth Proportional to 157,081.07, 216,776.49 and 85,465.70

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Solution

The fourth proportional to 157,081.07, 216,776.49 and 85,465.70 is: 117,945.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,081.07 : 216,776.49 = 85,465.70 : x
  2. Step 2: Convert to fraction form
    157,081.07/216,776.49 = 85,465.70/x
  3. Step 3: Cross multiply
    157,081.07x = 216,776.49 × 85,465.70
  4. Step 4: Simplify right side
    157,081.07x = 18,526,953,377.51
  5. Step 5: Solve for x
    x = 18,526,953,377.51/157,081.07
  6. Step 6: Final answer
    x = 117,945.17

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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.