Home / 129,378,622.55-178,544,985.08-70,643,615.60

Finding the Fourth Proportional to 129,378,622.55, 178,544,985.08 and 70,643,615.60

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Solution

The fourth proportional to 129,378,622.55, 178,544,985.08 and 70,643,615.60 is: 97,489,546.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,378,622.55 : 178,544,985.08 = 70,643,615.60 : x
  2. Step 2: Convert to fraction form
    129,378,622.55/178,544,985.08 = 70,643,615.60/x
  3. Step 3: Cross multiply
    129,378,622.55x = 178,544,985.08 × 70,643,615.60
  4. Step 4: Simplify right side
    129,378,622.55x = 12,613,063,293,392,400
  5. Step 5: Solve for x
    x = 12,613,063,293,392,400/129,378,622.55
  6. Step 6: Final answer
    x = 97,489,546.92

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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.