Home / 139,154,073.75-208,638,985.97-66,382,086.15

Finding the Fourth Proportional to 139,154,073.75, 208,638,985.97 and 66,382,086.15

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Solution

The fourth proportional to 139,154,073.75, 208,638,985.97 and 66,382,086.15 is: 99,529,182.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,154,073.75 : 208,638,985.97 = 66,382,086.15 : x
  2. Step 2: Convert to fraction form
    139,154,073.75/208,638,985.97 = 66,382,086.15/x
  3. Step 3: Cross multiply
    139,154,073.75x = 208,638,985.97 × 66,382,086.15
  4. Step 4: Simplify right side
    139,154,073.75x = 13,849,891,141,075,136
  5. Step 5: Solve for x
    x = 13,849,891,141,075,136/139,154,073.75
  6. Step 6: Final answer
    x = 99,529,182.06

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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.