Home / 155,939,548.91-215,199,125.82-85,373,981.87

Finding the Fourth Proportional to 155,939,548.91, 215,199,125.82 and 85,373,981.87

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Solution

The fourth proportional to 155,939,548.91, 215,199,125.82 and 85,373,981.87 is: 117,817,490.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,939,548.91 : 215,199,125.82 = 85,373,981.87 : x
  2. Step 2: Convert to fraction form
    155,939,548.91/215,199,125.82 = 85,373,981.87/x
  3. Step 3: Cross multiply
    155,939,548.91x = 215,199,125.82 × 85,373,981.87
  4. Step 4: Simplify right side
    155,939,548.91x = 18,372,406,265,120,532
  5. Step 5: Solve for x
    x = 18,372,406,265,120,532/155,939,548.91
  6. Step 6: Final answer
    x = 117,817,490.14

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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.