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Finding the Fourth Proportional to 130,554, 180,165.60 and 70,938

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Solution

The fourth proportional to 130,554, 180,165.60 and 70,938 is: 97,895.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,554 : 180,165.60 = 70,938 : x
  2. Step 2: Convert to fraction form
    130,554/180,165.60 = 70,938/x
  3. Step 3: Cross multiply
    130,554x = 180,165.60 × 70,938
  4. Step 4: Simplify right side
    130,554x = 12,780,587,332.80
  5. Step 5: Solve for x
    x = 12,780,587,332.80/130,554
  6. Step 6: Final answer
    x = 97,895.03

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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.