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Finding the Fourth Proportional to 132,045.60, 197,776.80 and 69,643.20

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Solution

The fourth proportional to 132,045.60, 197,776.80 and 69,643.20 is: 104,311.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,045.60 : 197,776.80 = 69,643.20 : x
  2. Step 2: Convert to fraction form
    132,045.60/197,776.80 = 69,643.20/x
  3. Step 3: Cross multiply
    132,045.60x = 197,776.80 × 69,643.20
  4. Step 4: Simplify right side
    132,045.60x = 13,773,809,237.76
  5. Step 5: Solve for x
    x = 13,773,809,237.76/132,045.60
  6. Step 6: Final answer
    x = 104,311.00

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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.