Home / 128,860,344.84-177,829,416.21-70,125,485.52

Finding the Fourth Proportional to 128,860,344.84, 177,829,416.21 and 70,125,485.52

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Solution

The fourth proportional to 128,860,344.84, 177,829,416.21 and 70,125,485.52 is: 96,774,334.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,860,344.84 : 177,829,416.21 = 70,125,485.52 : x
  2. Step 2: Convert to fraction form
    128,860,344.84/177,829,416.21 = 70,125,485.52/x
  3. Step 3: Cross multiply
    128,860,344.84x = 177,829,416.21 × 70,125,485.52
  4. Step 4: Simplify right side
    128,860,344.84x = 12,470,374,151,464,408
  5. Step 5: Solve for x
    x = 12,470,374,151,464,408/128,860,344.84
  6. Step 6: Final answer
    x = 96,774,334.78

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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.