Home / 122,409,985.50-168,925,779.99-67,405,710.78

Finding the Fourth Proportional to 122,409,985.50, 168,925,779.99 and 67,405,710.78

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Solution

The fourth proportional to 122,409,985.50, 168,925,779.99 and 67,405,710.78 is: 93,019,880.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,409,985.50 : 168,925,779.99 = 67,405,710.78 : x
  2. Step 2: Convert to fraction form
    122,409,985.50/168,925,779.99 = 67,405,710.78/x
  3. Step 3: Cross multiply
    122,409,985.50x = 168,925,779.99 × 67,405,710.78
  4. Step 4: Simplify right side
    122,409,985.50x = 11,386,562,269,291,852
  5. Step 5: Solve for x
    x = 11,386,562,269,291,852/122,409,985.50
  6. Step 6: Final answer
    x = 93,019,880.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.