Home / 156,023,061.15-215,318,805.08-85,463,637.15

Finding the Fourth Proportional to 156,023,061.15, 215,318,805.08 and 85,463,637.15

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Solution

The fourth proportional to 156,023,061.15, 215,318,805.08 and 85,463,637.15 is: 117,943,643.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,023,061.15 : 215,318,805.08 = 85,463,637.15 : x
  2. Step 2: Convert to fraction form
    156,023,061.15/215,318,805.08 = 85,463,637.15/x
  3. Step 3: Cross multiply
    156,023,061.15x = 215,318,805.08 × 85,463,637.15
  4. Step 4: Simplify right side
    156,023,061.15x = 18,401,928,228,501,380
  5. Step 5: Solve for x
    x = 18,401,928,228,501,380/156,023,061.15
  6. Step 6: Final answer
    x = 117,943,643.03

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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.