Home / 107,908.20-161,862.30-70,583.40

Finding the Fourth Proportional to 107,908.20, 161,862.30 and 70,583.40

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Solution

The fourth proportional to 107,908.20, 161,862.30 and 70,583.40 is: 105,875.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,908.20 : 161,862.30 = 70,583.40 : x
  2. Step 2: Convert to fraction form
    107,908.20/161,862.30 = 70,583.40/x
  3. Step 3: Cross multiply
    107,908.20x = 161,862.30 × 70,583.40
  4. Step 4: Simplify right side
    107,908.20x = 11,424,791,465.82
  5. Step 5: Solve for x
    x = 11,424,791,465.82/107,908.20
  6. Step 6: Final answer
    x = 105,875.10

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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.