Home / 109,445.05-151,034.16-61,698.40

Finding the Fourth Proportional to 109,445.05, 151,034.16 and 61,698.40

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Solution

The fourth proportional to 109,445.05, 151,034.16 and 61,698.40 is: 85,143.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,445.05 : 151,034.16 = 61,698.40 : x
  2. Step 2: Convert to fraction form
    109,445.05/151,034.16 = 61,698.40/x
  3. Step 3: Cross multiply
    109,445.05x = 151,034.16 × 61,698.40
  4. Step 4: Simplify right side
    109,445.05x = 9,318,566,017.34
  5. Step 5: Solve for x
    x = 9,318,566,017.34/109,445.05
  6. Step 6: Final answer
    x = 85,143.79

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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.