Home / 138,210.81-207,293.10-38,381.10

Finding the Fourth Proportional to 138,210.81, 207,293.10 and 38,381.10

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Solution

The fourth proportional to 138,210.81, 207,293.10 and 38,381.10 is: 57,565.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,210.81 : 207,293.10 = 38,381.10 : x
  2. Step 2: Convert to fraction form
    138,210.81/207,293.10 = 38,381.10/x
  3. Step 3: Cross multiply
    138,210.81x = 207,293.10 × 38,381.10
  4. Step 4: Simplify right side
    138,210.81x = 7,956,136,970.09
  5. Step 5: Solve for x
    x = 7,956,136,970.09/138,210.81
  6. Step 6: Final answer
    x = 57,565.23

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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.