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Finding the Fourth Proportional to 117,368.89, 176,009.12 and 42,470.51

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Solution

The fourth proportional to 117,368.89, 176,009.12 and 42,470.51 is: 63,689.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,368.89 : 176,009.12 = 42,470.51 : x
  2. Step 2: Convert to fraction form
    117,368.89/176,009.12 = 42,470.51/x
  3. Step 3: Cross multiply
    117,368.89x = 176,009.12 × 42,470.51
  4. Step 4: Simplify right side
    117,368.89x = 7,475,196,157.92
  5. Step 5: Solve for x
    x = 7,475,196,157.92/117,368.89
  6. Step 6: Final answer
    x = 63,689.76

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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.