Home / 155,047,381.80-213,974,918.10-85,432,744.50

Finding the Fourth Proportional to 155,047,381.80, 213,974,918.10 and 85,432,744.50

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Solution

The fourth proportional to 155,047,381.80, 213,974,918.10 and 85,432,744.50 is: 117,902,439.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,047,381.80 : 213,974,918.10 = 85,432,744.50 : x
  2. Step 2: Convert to fraction form
    155,047,381.80/213,974,918.10 = 85,432,744.50/x
  3. Step 3: Cross multiply
    155,047,381.80x = 213,974,918.10 × 85,432,744.50
  4. Step 4: Simplify right side
    155,047,381.80x = 18,280,464,507,445,724
  5. Step 5: Solve for x
    x = 18,280,464,507,445,724/155,047,381.80
  6. Step 6: Final answer
    x = 117,902,439.21

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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.