Home / 144,652,011.17-199,621,590.89-78,573,612.87

Finding the Fourth Proportional to 144,652,011.17, 199,621,590.89 and 78,573,612.87

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Solution

The fourth proportional to 144,652,011.17, 199,621,590.89 and 78,573,612.87 is: 108,432,571.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,652,011.17 : 199,621,590.89 = 78,573,612.87 : x
  2. Step 2: Convert to fraction form
    144,652,011.17/199,621,590.89 = 78,573,612.87/x
  3. Step 3: Cross multiply
    144,652,011.17x = 199,621,590.89 × 78,573,612.87
  4. Step 4: Simplify right side
    144,652,011.17x = 15,684,989,602,691,510
  5. Step 5: Solve for x
    x = 15,684,989,602,691,510/144,652,011.17
  6. Step 6: Final answer
    x = 108,432,571.91

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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.