Home / 139,728,045.60-209,592,068.40-79,261,869.60

Finding the Fourth Proportional to 139,728,045.60, 209,592,068.40 and 79,261,869.60

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Solution

The fourth proportional to 139,728,045.60, 209,592,068.40 and 79,261,869.60 is: 118,892,804.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,728,045.60 : 209,592,068.40 = 79,261,869.60 : x
  2. Step 2: Convert to fraction form
    139,728,045.60/209,592,068.40 = 79,261,869.60/x
  3. Step 3: Cross multiply
    139,728,045.60x = 209,592,068.40 × 79,261,869.60
  4. Step 4: Simplify right side
    139,728,045.60x = 16,612,659,194,715,080
  5. Step 5: Solve for x
    x = 16,612,659,194,715,080/139,728,045.60
  6. Step 6: Final answer
    x = 118,892,804.40

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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.