Home / 90,717,781.40-136,076,672.10-82,214,725.40

Finding the Fourth Proportional to 90,717,781.40, 136,076,672.10 and 82,214,725.40

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Solution

The fourth proportional to 90,717,781.40, 136,076,672.10 and 82,214,725.40 is: 123,322,088.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,717,781.40 : 136,076,672.10 = 82,214,725.40 : x
  2. Step 2: Convert to fraction form
    90,717,781.40/136,076,672.10 = 82,214,725.40/x
  3. Step 3: Cross multiply
    90,717,781.40x = 136,076,672.10 × 82,214,725.40
  4. Step 4: Simplify right side
    90,717,781.40x = 11,187,506,230,047,342
  5. Step 5: Solve for x
    x = 11,187,506,230,047,342/90,717,781.40
  6. Step 6: Final answer
    x = 123,322,088.10

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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.