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Finding the Fourth Proportional to 560,116.08, 840,172.68 and 139,392

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Solution

The fourth proportional to 560,116.08, 840,172.68 and 139,392 is: 209,087.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,116.08 : 840,172.68 = 139,392 : x
  2. Step 2: Convert to fraction form
    560,116.08/840,172.68 = 139,392/x
  3. Step 3: Cross multiply
    560,116.08x = 840,172.68 × 139,392
  4. Step 4: Simplify right side
    560,116.08x = 117,113,350,210.56
  5. Step 5: Solve for x
    x = 117,113,350,210.56/560,116.08
  6. Step 6: Final answer
    x = 209,087.64

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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.