Home / 90,644,135.60-135,966,203.40-78,314,704.40

Finding the Fourth Proportional to 90,644,135.60, 135,966,203.40 and 78,314,704.40

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Solution

The fourth proportional to 90,644,135.60, 135,966,203.40 and 78,314,704.40 is: 117,472,056.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,644,135.60 : 135,966,203.40 = 78,314,704.40 : x
  2. Step 2: Convert to fraction form
    90,644,135.60/135,966,203.40 = 78,314,704.40/x
  3. Step 3: Cross multiply
    90,644,135.60x = 135,966,203.40 × 78,314,704.40
  4. Step 4: Simplify right side
    90,644,135.60x = 10,648,153,027,661,276
  5. Step 5: Solve for x
    x = 10,648,153,027,661,276/90,644,135.60
  6. Step 6: Final answer
    x = 117,472,056.60

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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.