Home / 157,740.51-217,706.91-100,319.97

Finding the Fourth Proportional to 157,740.51, 217,706.91 and 100,319.97

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Solution

The fourth proportional to 157,740.51, 217,706.91 and 100,319.97 is: 138,457.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,740.51 : 217,706.91 = 100,319.97 : x
  2. Step 2: Convert to fraction form
    157,740.51/217,706.91 = 100,319.97/x
  3. Step 3: Cross multiply
    157,740.51x = 217,706.91 × 100,319.97
  4. Step 4: Simplify right side
    157,740.51x = 21,840,350,679.99
  5. Step 5: Solve for x
    x = 21,840,350,679.99/157,740.51
  6. Step 6: Final answer
    x = 138,457.46

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1.5x scale

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.