Home / 129,057,209.76-178,096,707.06-70,320,357.54

Finding the Fourth Proportional to 129,057,209.76, 178,096,707.06 and 70,320,357.54

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Solution

The fourth proportional to 129,057,209.76, 178,096,707.06 and 70,320,357.54 is: 97,040,871.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,057,209.76 : 178,096,707.06 = 70,320,357.54 : x
  2. Step 2: Convert to fraction form
    129,057,209.76/178,096,707.06 = 70,320,357.54/x
  3. Step 3: Cross multiply
    129,057,209.76x = 178,096,707.06 × 70,320,357.54
  4. Step 4: Simplify right side
    129,057,209.76x = 12,523,824,117,155,844
  5. Step 5: Solve for x
    x = 12,523,824,117,155,844/129,057,209.76
  6. Step 6: Final answer
    x = 97,040,871.57

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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.