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Finding the Fourth Proportional to 161,762.10, 242,643.15 and 147,246.90

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Solution

The fourth proportional to 161,762.10, 242,643.15 and 147,246.90 is: 220,870.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,762.10 : 242,643.15 = 147,246.90 : x
  2. Step 2: Convert to fraction form
    161,762.10/242,643.15 = 147,246.90/x
  3. Step 3: Cross multiply
    161,762.10x = 242,643.15 × 147,246.90
  4. Step 4: Simplify right side
    161,762.10x = 35,728,451,643.74
  5. Step 5: Solve for x
    x = 35,728,451,643.74/161,762.10
  6. Step 6: Final answer
    x = 220,870.35

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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.