Home / 90,720,239.40-136,080,359.10-82,828,340.55

Finding the Fourth Proportional to 90,720,239.40, 136,080,359.10 and 82,828,340.55

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Solution

The fourth proportional to 90,720,239.40, 136,080,359.10 and 82,828,340.55 is: 124,242,510.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,720,239.40 : 136,080,359.10 = 82,828,340.55 : x
  2. Step 2: Convert to fraction form
    90,720,239.40/136,080,359.10 = 82,828,340.55/x
  3. Step 3: Cross multiply
    90,720,239.40x = 136,080,359.10 × 82,828,340.55
  4. Step 4: Simplify right side
    90,720,239.40x = 11,271,310,325,701,090
  5. Step 5: Solve for x
    x = 11,271,310,325,701,090/90,720,239.40
  6. Step 6: Final answer
    x = 124,242,510.83

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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.