Home / 172,347,459.40-258,521,189.10-81,648,195.40

Finding the Fourth Proportional to 172,347,459.40, 258,521,189.10 and 81,648,195.40

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Solution

The fourth proportional to 172,347,459.40, 258,521,189.10 and 81,648,195.40 is: 122,472,293.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,347,459.40 : 258,521,189.10 = 81,648,195.40 : x
  2. Step 2: Convert to fraction form
    172,347,459.40/258,521,189.10 = 81,648,195.40/x
  3. Step 3: Cross multiply
    172,347,459.40x = 258,521,189.10 × 81,648,195.40
  4. Step 4: Simplify right side
    172,347,459.40x = 21,107,788,562,677,152
  5. Step 5: Solve for x
    x = 21,107,788,562,677,152/172,347,459.40
  6. Step 6: Final answer
    x = 122,472,293.10

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1.5x scale

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.