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Finding the Fourth Proportional to 145,713.08, 218,630.14 and 69,773.42

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Solution

The fourth proportional to 145,713.08, 218,630.14 and 69,773.42 is: 104,689.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,713.08 : 218,630.14 = 69,773.42 : x
  2. Step 2: Convert to fraction form
    145,713.08/218,630.14 = 69,773.42/x
  3. Step 3: Cross multiply
    145,713.08x = 218,630.14 × 69,773.42
  4. Step 4: Simplify right side
    145,713.08x = 15,254,572,955.02
  5. Step 5: Solve for x
    x = 15,254,572,955.02/145,713.08
  6. Step 6: Final answer
    x = 104,689.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.