Home / 109,433.12-151,008.65-61,698.20

Finding the Fourth Proportional to 109,433.12, 151,008.65 and 61,698.20

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Solution

The fourth proportional to 109,433.12, 151,008.65 and 61,698.20 is: 85,138.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,433.12 : 151,008.65 = 61,698.20 : x
  2. Step 2: Convert to fraction form
    109,433.12/151,008.65 = 61,698.20/x
  3. Step 3: Cross multiply
    109,433.12x = 151,008.65 × 61,698.20
  4. Step 4: Simplify right side
    109,433.12x = 9,316,960,825.90
  5. Step 5: Solve for x
    x = 9,316,960,825.90/109,433.12
  6. Step 6: Final answer
    x = 85,138.40

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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.