Home / 145,728,987.84-218,371,047.69-86,524,783.18

Finding the Fourth Proportional to 145,728,987.84, 218,371,047.69 and 86,524,783.18

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Solution

The fourth proportional to 145,728,987.84, 218,371,047.69 and 86,524,783.18 is: 129,655,107.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,728,987.84 : 218,371,047.69 = 86,524,783.18 : x
  2. Step 2: Convert to fraction form
    145,728,987.84/218,371,047.69 = 86,524,783.18/x
  3. Step 3: Cross multiply
    145,728,987.84x = 218,371,047.69 × 86,524,783.18
  4. Step 4: Simplify right side
    145,728,987.84x = 18,894,507,553,945,228
  5. Step 5: Solve for x
    x = 18,894,507,553,945,228/145,728,987.84
  6. Step 6: Final answer
    x = 129,655,107.29

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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.