Home / 128,860,347.84-177,829,420.36-70,125,488.52

Finding the Fourth Proportional to 128,860,347.84, 177,829,420.36 and 70,125,488.52

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Solution

The fourth proportional to 128,860,347.84, 177,829,420.36 and 70,125,488.52 is: 96,774,338.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,860,347.84 : 177,829,420.36 = 70,125,488.52 : x
  2. Step 2: Convert to fraction form
    128,860,347.84/177,829,420.36 = 70,125,488.52/x
  3. Step 3: Cross multiply
    128,860,347.84x = 177,829,420.36 × 70,125,488.52
  4. Step 4: Simplify right side
    128,860,347.84x = 12,470,374,975,973,434
  5. Step 5: Solve for x
    x = 12,470,374,975,973,434/128,860,347.84
  6. Step 6: Final answer
    x = 96,774,338.93

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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.