Home / 117,938,709.20-177,013,039.80-69,355,816.40

Finding the Fourth Proportional to 117,938,709.20, 177,013,039.80 and 69,355,816.40

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Solution

The fourth proportional to 117,938,709.20, 177,013,039.80 and 69,355,816.40 is: 104,095,457.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,938,709.20 : 177,013,039.80 = 69,355,816.40 : x
  2. Step 2: Convert to fraction form
    117,938,709.20/177,013,039.80 = 69,355,816.40/x
  3. Step 3: Cross multiply
    117,938,709.20x = 177,013,039.80 × 69,355,816.40
  4. Step 4: Simplify right side
    117,938,709.20x = 12,276,883,888,774,694
  5. Step 5: Solve for x
    x = 12,276,883,888,774,694/117,938,709.20
  6. Step 6: Final answer
    x = 104,095,457.48

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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.