Home / 129,257,620.48-178,369,287.60-70,516,790.80

Finding the Fourth Proportional to 129,257,620.48, 178,369,287.60 and 70,516,790.80

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Solution

The fourth proportional to 129,257,620.48, 178,369,287.60 and 70,516,790.80 is: 97,309,773.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,257,620.48 : 178,369,287.60 = 70,516,790.80 : x
  2. Step 2: Convert to fraction form
    129,257,620.48/178,369,287.60 = 70,516,790.80/x
  3. Step 3: Cross multiply
    129,257,620.48x = 178,369,287.60 × 70,516,790.80
  4. Step 4: Simplify right side
    129,257,620.48x = 12,578,029,738,834,234
  5. Step 5: Solve for x
    x = 12,578,029,738,834,234/129,257,620.48
  6. Step 6: Final answer
    x = 97,309,773.24

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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.