Home / 128,281,146.44-177,021,164.04-72,523,233.18

Finding the Fourth Proportional to 128,281,146.44, 177,021,164.04 and 72,523,233.18

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Solution

The fourth proportional to 128,281,146.44, 177,021,164.04 and 72,523,233.18 is: 100,078,207.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,281,146.44 : 177,021,164.04 = 72,523,233.18 : x
  2. Step 2: Convert to fraction form
    128,281,146.44/177,021,164.04 = 72,523,233.18/x
  3. Step 3: Cross multiply
    128,281,146.44x = 177,021,164.04 × 72,523,233.18
  4. Step 4: Simplify right side
    128,281,146.44x = 12,838,147,157,467,952
  5. Step 5: Solve for x
    x = 12,838,147,157,467,952/128,281,146.44
  6. Step 6: Final answer
    x = 100,078,207.24

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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.