Home / 129,697,898.42-178,965,423.50-77,475,848.56

Finding the Fourth Proportional to 129,697,898.42, 178,965,423.50 and 77,475,848.56

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Solution

The fourth proportional to 129,697,898.42, 178,965,423.50 and 77,475,848.56 is: 106,906,111.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,697,898.42 : 178,965,423.50 = 77,475,848.56 : x
  2. Step 2: Convert to fraction form
    129,697,898.42/178,965,423.50 = 77,475,848.56/x
  3. Step 3: Cross multiply
    129,697,898.42x = 178,965,423.50 × 77,475,848.56
  4. Step 4: Simplify right side
    129,697,898.42x = 13,865,498,047,727,474
  5. Step 5: Solve for x
    x = 13,865,498,047,727,474/129,697,898.42
  6. Step 6: Final answer
    x = 106,906,111.94

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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.