Home / 145,062,014.88-200,190,493.68-78,985,075.80

Finding the Fourth Proportional to 145,062,014.88, 200,190,493.68 and 78,985,075.80

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Solution

The fourth proportional to 145,062,014.88, 200,190,493.68 and 78,985,075.80 is: 109,002,079.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,062,014.88 : 200,190,493.68 = 78,985,075.80 : x
  2. Step 2: Convert to fraction form
    145,062,014.88/200,190,493.68 = 78,985,075.80/x
  3. Step 3: Cross multiply
    145,062,014.88x = 200,190,493.68 × 78,985,075.80
  4. Step 4: Simplify right side
    145,062,014.88x = 15,812,061,317,754,220
  5. Step 5: Solve for x
    x = 15,812,061,317,754,220/145,062,014.88
  6. Step 6: Final answer
    x = 109,002,079.77

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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.