Home / 145,117.06-200,261.64-81,465.64

Finding the Fourth Proportional to 145,117.06, 200,261.64 and 81,465.64

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Solution

The fourth proportional to 145,117.06, 200,261.64 and 81,465.64 is: 112,422.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,117.06 : 200,261.64 = 81,465.64 : x
  2. Step 2: Convert to fraction form
    145,117.06/200,261.64 = 81,465.64/x
  3. Step 3: Cross multiply
    145,117.06x = 200,261.64 × 81,465.64
  4. Step 4: Simplify right side
    145,117.06x = 16,314,442,670.05
  5. Step 5: Solve for x
    x = 16,314,442,670.05/145,117.06
  6. Step 6: Final answer
    x = 112,422.64

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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.