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Finding the Fourth Proportional to 109,602.08, 151,247.81 and 61,859.87

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Solution

The fourth proportional to 109,602.08, 151,247.81 and 61,859.87 is: 85,364.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,602.08 : 151,247.81 = 61,859.87 : x
  2. Step 2: Convert to fraction form
    109,602.08/151,247.81 = 61,859.87/x
  3. Step 3: Cross multiply
    109,602.08x = 151,247.81 × 61,859.87
  4. Step 4: Simplify right side
    109,602.08x = 9,356,169,482.01
  5. Step 5: Solve for x
    x = 9,356,169,482.01/109,602.08
  6. Step 6: Final answer
    x = 85,364.89

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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.