Home / 128,523,416.69-192,791,325.20-42,259,913.57

Finding the Fourth Proportional to 128,523,416.69, 192,791,325.20 and 42,259,913.57

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Solution

The fourth proportional to 128,523,416.69, 192,791,325.20 and 42,259,913.57 is: 63,391,909.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,523,416.69 : 192,791,325.20 = 42,259,913.57 : x
  2. Step 2: Convert to fraction form
    128,523,416.69/192,791,325.20 = 42,259,913.57/x
  3. Step 3: Cross multiply
    128,523,416.69x = 192,791,325.20 × 42,259,913.57
  4. Step 4: Simplify right side
    128,523,416.69x = 8,147,344,738,822,506
  5. Step 5: Solve for x
    x = 8,147,344,738,822,506/128,523,416.69
  6. Step 6: Final answer
    x = 63,391,909.03

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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.