Home / 145,967,729.96-201,436,001.16-78,986,688.65

Finding the Fourth Proportional to 145,967,729.96, 201,436,001.16 and 78,986,688.65

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Solution

The fourth proportional to 145,967,729.96, 201,436,001.16 and 78,986,688.65 is: 109,001,919.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,967,729.96 : 201,436,001.16 = 78,986,688.65 : x
  2. Step 2: Convert to fraction form
    145,967,729.96/201,436,001.16 = 78,986,688.65/x
  3. Step 3: Cross multiply
    145,967,729.96x = 201,436,001.16 × 78,986,688.65
  4. Step 4: Simplify right side
    145,967,729.96x = 15,910,762,706,525,960
  5. Step 5: Solve for x
    x = 15,910,762,706,525,960/145,967,729.96
  6. Step 6: Final answer
    x = 109,001,919.20

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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.