Home / 112,900,731.45-155,512,713.06-79,804,080.65

Finding the Fourth Proportional to 112,900,731.45, 155,512,713.06 and 79,804,080.65

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Solution

The fourth proportional to 112,900,731.45, 155,512,713.06 and 79,804,080.65 is: 109,924,434.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,900,731.45 : 155,512,713.06 = 79,804,080.65 : x
  2. Step 2: Convert to fraction form
    112,900,731.45/155,512,713.06 = 79,804,080.65/x
  3. Step 3: Cross multiply
    112,900,731.45x = 155,512,713.06 × 79,804,080.65
  4. Step 4: Simplify right side
    112,900,731.45x = 12,410,549,095,529,330
  5. Step 5: Solve for x
    x = 12,410,549,095,529,330/112,900,731.45
  6. Step 6: Final answer
    x = 109,924,434.82

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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.