Home / 145,206.05-217,864.91-70,320.43

Finding the Fourth Proportional to 145,206.05, 217,864.91 and 70,320.43

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Solution

The fourth proportional to 145,206.05, 217,864.91 and 70,320.43 is: 105,507.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,206.05 : 217,864.91 = 70,320.43 : x
  2. Step 2: Convert to fraction form
    145,206.05/217,864.91 = 70,320.43/x
  3. Step 3: Cross multiply
    145,206.05x = 217,864.91 × 70,320.43
  4. Step 4: Simplify right side
    145,206.05x = 15,320,353,256.85
  5. Step 5: Solve for x
    x = 15,320,353,256.85/145,206.05
  6. Step 6: Final answer
    x = 105,507.68

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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.