Home / 138,698,075.91-191,400,999.03-76,817,085.87

Finding the Fourth Proportional to 138,698,075.91, 191,400,999.03 and 76,817,085.87

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Solution

The fourth proportional to 138,698,075.91, 191,400,999.03 and 76,817,085.87 is: 106,006,279.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,698,075.91 : 191,400,999.03 = 76,817,085.87 : x
  2. Step 2: Convert to fraction form
    138,698,075.91/191,400,999.03 = 76,817,085.87/x
  3. Step 3: Cross multiply
    138,698,075.91x = 191,400,999.03 × 76,817,085.87
  4. Step 4: Simplify right side
    138,698,075.91x = 14,702,866,978,091,298
  5. Step 5: Solve for x
    x = 14,702,866,978,091,298/138,698,075.91
  6. Step 6: Final answer
    x = 106,006,279.33

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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.