Home / 129,552,696.72-178,782,707.60-70,815,595.68

Finding the Fourth Proportional to 129,552,696.72, 178,782,707.60 and 70,815,595.68

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Solution

The fourth proportional to 129,552,696.72, 178,782,707.60 and 70,815,595.68 is: 97,725,514.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,552,696.72 : 178,782,707.60 = 70,815,595.68 : x
  2. Step 2: Convert to fraction form
    129,552,696.72/178,782,707.60 = 70,815,595.68/x
  3. Step 3: Cross multiply
    129,552,696.72x = 178,782,707.60 × 70,815,595.68
  4. Step 4: Simplify right side
    129,552,696.72x = 12,660,603,935,977,264
  5. Step 5: Solve for x
    x = 12,660,603,935,977,264/129,552,696.72
  6. Step 6: Final answer
    x = 97,725,514.45

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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.