Home / 155,411.20-233,116.80-66,649.60

Finding the Fourth Proportional to 155,411.20, 233,116.80 and 66,649.60

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Solution

The fourth proportional to 155,411.20, 233,116.80 and 66,649.60 is: 99,974.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,411.20 : 233,116.80 = 66,649.60 : x
  2. Step 2: Convert to fraction form
    155,411.20/233,116.80 = 66,649.60/x
  3. Step 3: Cross multiply
    155,411.20x = 233,116.80 × 66,649.60
  4. Step 4: Simplify right side
    155,411.20x = 15,537,141,473.28
  5. Step 5: Solve for x
    x = 15,537,141,473.28/155,411.20
  6. Step 6: Final answer
    x = 99,974.40

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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.