Home / 129,555,585.72-178,786,716.75-70,818,483.51

Finding the Fourth Proportional to 129,555,585.72, 178,786,716.75 and 70,818,483.51

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Solution

The fourth proportional to 129,555,585.72, 178,786,716.75 and 70,818,483.51 is: 97,729,511.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,555,585.72 : 178,786,716.75 = 70,818,483.51 : x
  2. Step 2: Convert to fraction form
    129,555,585.72/178,786,716.75 = 70,818,483.51/x
  3. Step 3: Cross multiply
    129,555,585.72x = 178,786,716.75 × 70,818,483.51
  4. Step 4: Simplify right side
    129,555,585.72x = 12,661,404,151,966,916
  5. Step 5: Solve for x
    x = 12,661,404,151,966,916/129,555,585.72
  6. Step 6: Final answer
    x = 97,729,511.87

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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.