Home / 189,531.12-261,545.04-103,483.20

Finding the Fourth Proportional to 189,531.12, 261,545.04 and 103,483.20

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Solution

The fourth proportional to 189,531.12, 261,545.04 and 103,483.20 is: 142,802.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,531.12 : 261,545.04 = 103,483.20 : x
  2. Step 2: Convert to fraction form
    189,531.12/261,545.04 = 103,483.20/x
  3. Step 3: Cross multiply
    189,531.12x = 261,545.04 × 103,483.20
  4. Step 4: Simplify right side
    189,531.12x = 27,065,517,683.33
  5. Step 5: Solve for x
    x = 27,065,517,683.33/189,531.12
  6. Step 6: Final answer
    x = 142,802.50

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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.