Home / 105,192,021.40-157,788,032.10-86,060,145.40

Finding the Fourth Proportional to 105,192,021.40, 157,788,032.10 and 86,060,145.40

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Solution

The fourth proportional to 105,192,021.40, 157,788,032.10 and 86,060,145.40 is: 129,090,218.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,192,021.40 : 157,788,032.10 = 86,060,145.40 : x
  2. Step 2: Convert to fraction form
    105,192,021.40/157,788,032.10 = 86,060,145.40/x
  3. Step 3: Cross multiply
    105,192,021.40x = 157,788,032.10 × 86,060,145.40
  4. Step 4: Simplify right side
    105,192,021.40x = 13,579,260,984,905,868
  5. Step 5: Solve for x
    x = 13,579,260,984,905,868/105,192,021.40
  6. Step 6: Final answer
    x = 129,090,218.10

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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.