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Finding the Fourth Proportional to 145,159.02, 217,701.99 and 51,642.90

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Solution

The fourth proportional to 145,159.02, 217,701.99 and 51,642.90 is: 77,451.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,159.02 : 217,701.99 = 51,642.90 : x
  2. Step 2: Convert to fraction form
    145,159.02/217,701.99 = 51,642.90/x
  3. Step 3: Cross multiply
    145,159.02x = 217,701.99 × 51,642.90
  4. Step 4: Simplify right side
    145,159.02x = 11,242,762,099.37
  5. Step 5: Solve for x
    x = 11,242,762,099.37/145,159.02
  6. Step 6: Final answer
    x = 77,451.35

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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.