Home / 129,220,931.40-178,324,886-70,483,593.48

Finding the Fourth Proportional to 129,220,931.40, 178,324,886 and 70,483,593.48

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Solution

The fourth proportional to 129,220,931.40, 178,324,886 and 70,483,593.48 is: 97,267,359.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,220,931.40 : 178,324,886 = 70,483,593.48 : x
  2. Step 2: Convert to fraction form
    129,220,931.40/178,324,886 = 70,483,593.48/x
  3. Step 3: Cross multiply
    129,220,931.40x = 178,324,886 × 70,483,593.48
  4. Step 4: Simplify right side
    129,220,931.40x = 12,568,978,772,191,344
  5. Step 5: Solve for x
    x = 12,568,978,772,191,344/129,220,931.40
  6. Step 6: Final answer
    x = 97,267,359.37

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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.