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Finding the Fourth Proportional to 132,470, 182,809.48 and 72,041.32

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Solution

The fourth proportional to 132,470, 182,809.48 and 72,041.32 is: 99,417.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,470 : 182,809.48 = 72,041.32 : x
  2. Step 2: Convert to fraction form
    132,470/182,809.48 = 72,041.32/x
  3. Step 3: Cross multiply
    132,470x = 182,809.48 × 72,041.32
  4. Step 4: Simplify right side
    132,470x = 13,169,836,247.71
  5. Step 5: Solve for x
    x = 13,169,836,247.71/132,470
  6. Step 6: Final answer
    x = 99,417.50

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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.