Home / 172,335,871.40-258,671,768.70-86,171,570.60

Finding the Fourth Proportional to 172,335,871.40, 258,671,768.70 and 86,171,570.60

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Solution

The fourth proportional to 172,335,871.40, 258,671,768.70 and 86,171,570.60 is: 129,341,340.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,335,871.40 : 258,671,768.70 = 86,171,570.60 : x
  2. Step 2: Convert to fraction form
    172,335,871.40/258,671,768.70 = 86,171,570.60/x
  3. Step 3: Cross multiply
    172,335,871.40x = 258,671,768.70 × 86,171,570.60
  4. Step 4: Simplify right side
    172,335,871.40x = 22,290,152,578,758,916
  5. Step 5: Solve for x
    x = 22,290,152,578,758,916/172,335,871.40
  6. Step 6: Final answer
    x = 129,341,340.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.