Home / 128,476,782.72-177,293,153.28-69,738,184.32

Finding the Fourth Proportional to 128,476,782.72, 177,293,153.28 and 69,738,184.32

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Solution

The fourth proportional to 128,476,782.72, 177,293,153.28 and 69,738,184.32 is: 96,236,085.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,476,782.72 : 177,293,153.28 = 69,738,184.32 : x
  2. Step 2: Convert to fraction form
    128,476,782.72/177,293,153.28 = 69,738,184.32/x
  3. Step 3: Cross multiply
    128,476,782.72x = 177,293,153.28 × 69,738,184.32
  4. Step 4: Simplify right side
    128,476,782.72x = 12,364,102,602,114,652
  5. Step 5: Solve for x
    x = 12,364,102,602,114,652/128,476,782.72
  6. Step 6: Final answer
    x = 96,236,085.15

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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.