Home / 129,489,702.11-178,698,193.67-70,756,171.40

Finding the Fourth Proportional to 129,489,702.11, 178,698,193.67 and 70,756,171.40

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Solution

The fourth proportional to 129,489,702.11, 178,698,193.67 and 70,756,171.40 is: 97,644,830.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,489,702.11 : 178,698,193.67 = 70,756,171.40 : x
  2. Step 2: Convert to fraction form
    129,489,702.11/178,698,193.67 = 70,756,171.40/x
  3. Step 3: Cross multiply
    129,489,702.11x = 178,698,193.67 × 70,756,171.40
  4. Step 4: Simplify right side
    129,489,702.11x = 12,644,000,018,937,642
  5. Step 5: Solve for x
    x = 12,644,000,018,937,642/129,489,702.11
  6. Step 6: Final answer
    x = 97,644,830.54

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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.