Home / 80,860,809.60-121,291,214.40-78,735,045.60

Finding the Fourth Proportional to 80,860,809.60, 121,291,214.40 and 78,735,045.60

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Solution

The fourth proportional to 80,860,809.60, 121,291,214.40 and 78,735,045.60 is: 118,102,568.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,860,809.60 : 121,291,214.40 = 78,735,045.60 : x
  2. Step 2: Convert to fraction form
    80,860,809.60/121,291,214.40 = 78,735,045.60/x
  3. Step 3: Cross multiply
    80,860,809.60x = 121,291,214.40 × 78,735,045.60
  4. Step 4: Simplify right side
    80,860,809.60x = 9,549,869,296,663,376
  5. Step 5: Solve for x
    x = 9,549,869,296,663,376/80,860,809.60
  6. Step 6: Final answer
    x = 118,102,568.40

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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.