Home / 124,284.12-186,510-45,406.32

Finding the Fourth Proportional to 124,284.12, 186,510 and 45,406.32

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Solution

The fourth proportional to 124,284.12, 186,510 and 45,406.32 is: 68,140.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,284.12 : 186,510 = 45,406.32 : x
  2. Step 2: Convert to fraction form
    124,284.12/186,510 = 45,406.32/x
  3. Step 3: Cross multiply
    124,284.12x = 186,510 × 45,406.32
  4. Step 4: Simplify right side
    124,284.12x = 8,468,732,743.20
  5. Step 5: Solve for x
    x = 8,468,732,743.20/124,284.12
  6. Step 6: Final answer
    x = 68,140.10

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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.