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Finding the Fourth Proportional to 145,160.84, 217,739.33 and 70,287.68

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Solution

The fourth proportional to 145,160.84, 217,739.33 and 70,287.68 is: 105,430.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,160.84 : 217,739.33 = 70,287.68 : x
  2. Step 2: Convert to fraction form
    145,160.84/217,739.33 = 70,287.68/x
  3. Step 3: Cross multiply
    145,160.84x = 217,739.33 × 70,287.68
  4. Step 4: Simplify right side
    145,160.84x = 15,304,392,350.45
  5. Step 5: Solve for x
    x = 15,304,392,350.45/145,160.84
  6. Step 6: Final answer
    x = 105,430.59

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1.5x scale

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.