Home / 128,036,956.90-176,690,987.37-69,299,611.72

Finding the Fourth Proportional to 128,036,956.90, 176,690,987.37 and 69,299,611.72

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Solution

The fourth proportional to 128,036,956.90, 176,690,987.37 and 69,299,611.72 is: 95,633,457.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,036,956.90 : 176,690,987.37 = 69,299,611.72 : x
  2. Step 2: Convert to fraction form
    128,036,956.90/176,690,987.37 = 69,299,611.72/x
  3. Step 3: Cross multiply
    128,036,956.90x = 176,690,987.37 × 69,299,611.72
  4. Step 4: Simplify right side
    128,036,956.90x = 12,244,616,819,164,424
  5. Step 5: Solve for x
    x = 12,244,616,819,164,424/128,036,956.90
  6. Step 6: Final answer
    x = 95,633,457.06

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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.