Home / 129,360,259.15-193,944,728.91-78,230,911.03

Finding the Fourth Proportional to 129,360,259.15, 193,944,728.91 and 78,230,911.03

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Solution

The fourth proportional to 129,360,259.15, 193,944,728.91 and 78,230,911.03 is: 117,288,516.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,360,259.15 : 193,944,728.91 = 78,230,911.03 : x
  2. Step 2: Convert to fraction form
    129,360,259.15/193,944,728.91 = 78,230,911.03/x
  3. Step 3: Cross multiply
    129,360,259.15x = 193,944,728.91 × 78,230,911.03
  4. Step 4: Simplify right side
    129,360,259.15x = 15,172,472,832,095,678
  5. Step 5: Solve for x
    x = 15,172,472,832,095,678/129,360,259.15
  6. Step 6: Final answer
    x = 117,288,516.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.