Home / 120,625,623.60-180,938,435.40-74,709,121.20

Finding the Fourth Proportional to 120,625,623.60, 180,938,435.40 and 74,709,121.20

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Solution

The fourth proportional to 120,625,623.60, 180,938,435.40 and 74,709,121.20 is: 112,063,681.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,625,623.60 : 180,938,435.40 = 74,709,121.20 : x
  2. Step 2: Convert to fraction form
    120,625,623.60/180,938,435.40 = 74,709,121.20/x
  3. Step 3: Cross multiply
    120,625,623.60x = 180,938,435.40 × 74,709,121.20
  4. Step 4: Simplify right side
    120,625,623.60x = 13,517,751,500,036,972
  5. Step 5: Solve for x
    x = 13,517,751,500,036,972/120,625,623.60
  6. Step 6: Final answer
    x = 112,063,681.80

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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.