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Finding the Fourth Proportional to 88,315.79, 132,970.88 and 77,853.02

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Solution

The fourth proportional to 88,315.79, 132,970.88 and 77,853.02 is: 117,217.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,315.79 : 132,970.88 = 77,853.02 : x
  2. Step 2: Convert to fraction form
    88,315.79/132,970.88 = 77,853.02/x
  3. Step 3: Cross multiply
    88,315.79x = 132,970.88 × 77,853.02
  4. Step 4: Simplify right side
    88,315.79x = 10,352,184,109.84
  5. Step 5: Solve for x
    x = 10,352,184,109.84/88,315.79
  6. Step 6: Final answer
    x = 117,217.82

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.