Home / 127,293,907.11-191,035,907.68-86,256,018.51

Finding the Fourth Proportional to 127,293,907.11, 191,035,907.68 and 86,256,018.51

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Solution

The fourth proportional to 127,293,907.11, 191,035,907.68 and 86,256,018.51 is: 129,448,432.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,293,907.11 : 191,035,907.68 = 86,256,018.51 : x
  2. Step 2: Convert to fraction form
    127,293,907.11/191,035,907.68 = 86,256,018.51/x
  3. Step 3: Cross multiply
    127,293,907.11x = 191,035,907.68 × 86,256,018.51
  4. Step 4: Simplify right side
    127,293,907.11x = 16,477,996,788,920,732
  5. Step 5: Solve for x
    x = 16,477,996,788,920,732/127,293,907.11
  6. Step 6: Final answer
    x = 129,448,432.87

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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.