Home / 129,901,486.32-179,264,035.98-77,690,513.88

Finding the Fourth Proportional to 129,901,486.32, 179,264,035.98 and 77,690,513.88

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Solution

The fourth proportional to 129,901,486.32, 179,264,035.98 and 77,690,513.88 is: 107,212,900.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,901,486.32 : 179,264,035.98 = 77,690,513.88 : x
  2. Step 2: Convert to fraction form
    129,901,486.32/179,264,035.98 = 77,690,513.88/x
  3. Step 3: Cross multiply
    129,901,486.32x = 179,264,035.98 × 77,690,513.88
  4. Step 4: Simplify right side
    129,901,486.32x = 13,927,115,075,489,008
  5. Step 5: Solve for x
    x = 13,927,115,075,489,008/129,901,486.32
  6. Step 6: Final answer
    x = 107,212,900.10

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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.