Home / 145,534.18-200,763.68-85,065.32

Finding the Fourth Proportional to 145,534.18, 200,763.68 and 85,065.32

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Solution

The fourth proportional to 145,534.18, 200,763.68 and 85,065.32 is: 117,347.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,534.18 : 200,763.68 = 85,065.32 : x
  2. Step 2: Convert to fraction form
    145,534.18/200,763.68 = 85,065.32/x
  3. Step 3: Cross multiply
    145,534.18x = 200,763.68 × 85,065.32
  4. Step 4: Simplify right side
    145,534.18x = 17,078,025,679.76
  5. Step 5: Solve for x
    x = 17,078,025,679.76/145,534.18
  6. Step 6: Final answer
    x = 117,347.18

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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.