Home / 145,655,143.35-218,482,715.03-138,936,679.35

Finding the Fourth Proportional to 145,655,143.35, 218,482,715.03 and 138,936,679.35

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Solution

The fourth proportional to 145,655,143.35, 218,482,715.03 and 138,936,679.35 is: 208,405,019.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,655,143.35 : 218,482,715.03 = 138,936,679.35 : x
  2. Step 2: Convert to fraction form
    145,655,143.35/218,482,715.03 = 138,936,679.35/x
  3. Step 3: Cross multiply
    145,655,143.35x = 218,482,715.03 × 138,936,679.35
  4. Step 4: Simplify right side
    145,655,143.35x = 30,355,262,920,945,852
  5. Step 5: Solve for x
    x = 30,355,262,920,945,852/145,655,143.35
  6. Step 6: Final answer
    x = 208,405,019.03

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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.