Home / 129,435,537.30-178,619,862.35-70,698,186.87

Finding the Fourth Proportional to 129,435,537.30, 178,619,862.35 and 70,698,186.87

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Solution

The fourth proportional to 129,435,537.30, 178,619,862.35 and 70,698,186.87 is: 97,562,853.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,435,537.30 : 178,619,862.35 = 70,698,186.87 : x
  2. Step 2: Convert to fraction form
    129,435,537.30/178,619,862.35 = 70,698,186.87/x
  3. Step 3: Cross multiply
    129,435,537.30x = 178,619,862.35 × 70,698,186.87
  4. Step 4: Simplify right side
    129,435,537.30x = 12,628,100,406,760,488
  5. Step 5: Solve for x
    x = 12,628,100,406,760,488/129,435,537.30
  6. Step 6: Final answer
    x = 97,562,853.84

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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.