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Finding the Fourth Proportional to 109,630.16, 151,289.16 and 61,882.96

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Solution

The fourth proportional to 109,630.16, 151,289.16 and 61,882.96 is: 85,398.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,630.16 : 151,289.16 = 61,882.96 : x
  2. Step 2: Convert to fraction form
    109,630.16/151,289.16 = 61,882.96/x
  3. Step 3: Cross multiply
    109,630.16x = 151,289.16 × 61,882.96
  4. Step 4: Simplify right side
    109,630.16x = 9,362,221,036.71
  5. Step 5: Solve for x
    x = 9,362,221,036.71/109,630.16
  6. Step 6: Final answer
    x = 85,398.22

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1.5x scale

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.