Home / 153,743,089.72-211,973,009.03-128,319,007.56

Finding the Fourth Proportional to 153,743,089.72, 211,973,009.03 and 128,319,007.56

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Solution

The fourth proportional to 153,743,089.72, 211,973,009.03 and 128,319,007.56 is: 176,919,601.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,743,089.72 : 211,973,009.03 = 128,319,007.56 : x
  2. Step 2: Convert to fraction form
    153,743,089.72/211,973,009.03 = 128,319,007.56/x
  3. Step 3: Cross multiply
    153,743,089.72x = 211,973,009.03 × 128,319,007.56
  4. Step 4: Simplify right side
    153,743,089.72x = 27,200,166,148,236,520
  5. Step 5: Solve for x
    x = 27,200,166,148,236,520/153,743,089.72
  6. Step 6: Final answer
    x = 176,919,601.38

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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.