Home / 90,717,785.40-136,076,678.10-82,214,729.40

Finding the Fourth Proportional to 90,717,785.40, 136,076,678.10 and 82,214,729.40

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Solution

The fourth proportional to 90,717,785.40, 136,076,678.10 and 82,214,729.40 is: 123,322,094.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,717,785.40 : 136,076,678.10 = 82,214,729.40 : x
  2. Step 2: Convert to fraction form
    90,717,785.40/136,076,678.10 = 82,214,729.40/x
  3. Step 3: Cross multiply
    90,717,785.40x = 136,076,678.10 × 82,214,729.40
  4. Step 4: Simplify right side
    90,717,785.40x = 11,187,507,267,642,406
  5. Step 5: Solve for x
    x = 11,187,507,267,642,406/90,717,785.40
  6. Step 6: Final answer
    x = 123,322,094.10

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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.