Home / 123,786,009.70-185,679,014.55-66,390,381.70

Finding the Fourth Proportional to 123,786,009.70, 185,679,014.55 and 66,390,381.70

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Solution

The fourth proportional to 123,786,009.70, 185,679,014.55 and 66,390,381.70 is: 99,585,572.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,786,009.70 : 185,679,014.55 = 66,390,381.70 : x
  2. Step 2: Convert to fraction form
    123,786,009.70/185,679,014.55 = 66,390,381.70/x
  3. Step 3: Cross multiply
    123,786,009.70x = 185,679,014.55 × 66,390,381.70
  4. Step 4: Simplify right side
    123,786,009.70x = 12,327,300,649,654,356
  5. Step 5: Solve for x
    x = 12,327,300,649,654,356/123,786,009.70
  6. Step 6: Final answer
    x = 99,585,572.55

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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.