Home / 249,621.20-374,431.80-81,141.20

Finding the Fourth Proportional to 249,621.20, 374,431.80 and 81,141.20

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Solution

The fourth proportional to 249,621.20, 374,431.80 and 81,141.20 is: 121,711.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,621.20 : 374,431.80 = 81,141.20 : x
  2. Step 2: Convert to fraction form
    249,621.20/374,431.80 = 81,141.20/x
  3. Step 3: Cross multiply
    249,621.20x = 374,431.80 × 81,141.20
  4. Step 4: Simplify right side
    249,621.20x = 30,381,845,570.16
  5. Step 5: Solve for x
    x = 30,381,845,570.16/249,621.20
  6. Step 6: Final answer
    x = 121,711.80

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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.