Home / 128,435,290.40-177,240,816.63-69,697,956.09

Finding the Fourth Proportional to 128,435,290.40, 177,240,816.63 and 69,697,956.09

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Solution

The fourth proportional to 128,435,290.40, 177,240,816.63 and 69,697,956.09 is: 96,183,242.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,435,290.40 : 177,240,816.63 = 69,697,956.09 : x
  2. Step 2: Convert to fraction form
    128,435,290.40/177,240,816.63 = 69,697,956.09/x
  3. Step 3: Cross multiply
    128,435,290.40x = 177,240,816.63 × 69,697,956.09
  4. Step 4: Simplify right side
    128,435,290.40x = 12,353,322,654,833,482
  5. Step 5: Solve for x
    x = 12,353,322,654,833,482/128,435,290.40
  6. Step 6: Final answer
    x = 96,183,242.29

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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.