Home / 85,009,505.80-127,514,258.70-79,970,657.80

Finding the Fourth Proportional to 85,009,505.80, 127,514,258.70 and 79,970,657.80

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Solution

The fourth proportional to 85,009,505.80, 127,514,258.70 and 79,970,657.80 is: 119,955,986.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,009,505.80 : 127,514,258.70 = 79,970,657.80 : x
  2. Step 2: Convert to fraction form
    85,009,505.80/127,514,258.70 = 79,970,657.80/x
  3. Step 3: Cross multiply
    85,009,505.80x = 127,514,258.70 × 79,970,657.80
  4. Step 4: Simplify right side
    85,009,505.80x = 10,197,399,147,118,372
  5. Step 5: Solve for x
    x = 10,197,399,147,118,372/85,009,505.80
  6. Step 6: Final answer
    x = 119,955,986.70

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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.