Home / 85,201,965.40-127,802,948.10-74,679,433.60

Finding the Fourth Proportional to 85,201,965.40, 127,802,948.10 and 74,679,433.60

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Solution

The fourth proportional to 85,201,965.40, 127,802,948.10 and 74,679,433.60 is: 112,019,150.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,201,965.40 : 127,802,948.10 = 74,679,433.60 : x
  2. Step 2: Convert to fraction form
    85,201,965.40/127,802,948.10 = 74,679,433.60/x
  3. Step 3: Cross multiply
    85,201,965.40x = 127,802,948.10 × 74,679,433.60
  4. Step 4: Simplify right side
    85,201,965.40x = 9,544,251,776,518,194
  5. Step 5: Solve for x
    x = 9,544,251,776,518,194/85,201,965.40
  6. Step 6: Final answer
    x = 112,019,150.40

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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.