Home / 249,787.20-374,680.80-81,323.40

Finding the Fourth Proportional to 249,787.20, 374,680.80 and 81,323.40

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Solution

The fourth proportional to 249,787.20, 374,680.80 and 81,323.40 is: 121,985.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,787.20 : 374,680.80 = 81,323.40 : x
  2. Step 2: Convert to fraction form
    249,787.20/374,680.80 = 81,323.40/x
  3. Step 3: Cross multiply
    249,787.20x = 374,680.80 × 81,323.40
  4. Step 4: Simplify right side
    249,787.20x = 30,470,316,570.72
  5. Step 5: Solve for x
    x = 30,470,316,570.72/249,787.20
  6. Step 6: Final answer
    x = 121,985.10

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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.