Home / 120,625,643.60-180,938,465.40-74,709,141.20

Finding the Fourth Proportional to 120,625,643.60, 180,938,465.40 and 74,709,141.20

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Solution

The fourth proportional to 120,625,643.60, 180,938,465.40 and 74,709,141.20 is: 112,063,711.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,625,643.60 : 180,938,465.40 = 74,709,141.20 : x
  2. Step 2: Convert to fraction form
    120,625,643.60/180,938,465.40 = 74,709,141.20/x
  3. Step 3: Cross multiply
    120,625,643.60x = 180,938,465.40 × 74,709,141.20
  4. Step 4: Simplify right side
    120,625,643.60x = 13,517,757,360,079,916
  5. Step 5: Solve for x
    x = 13,517,757,360,079,916/120,625,643.60
  6. Step 6: Final answer
    x = 112,063,711.80

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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.