Home / 128,768,023.20-193,152,034.80-87,953,354.40

Finding the Fourth Proportional to 128,768,023.20, 193,152,034.80 and 87,953,354.40

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Solution

The fourth proportional to 128,768,023.20, 193,152,034.80 and 87,953,354.40 is: 131,930,031.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,768,023.20 : 193,152,034.80 = 87,953,354.40 : x
  2. Step 2: Convert to fraction form
    128,768,023.20/193,152,034.80 = 87,953,354.40/x
  3. Step 3: Cross multiply
    128,768,023.20x = 193,152,034.80 × 87,953,354.40
  4. Step 4: Simplify right side
    128,768,023.20x = 16,988,369,369,845,536
  5. Step 5: Solve for x
    x = 16,988,369,369,845,536/128,768,023.20
  6. Step 6: Final answer
    x = 131,930,031.60

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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.