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Finding the Fourth Proportional to 99,442.94, 148,967.57 and 86,977.04

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Solution

The fourth proportional to 99,442.94, 148,967.57 and 86,977.04 is: 130,293.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,442.94 : 148,967.57 = 86,977.04 : x
  2. Step 2: Convert to fraction form
    99,442.94/148,967.57 = 86,977.04/x
  3. Step 3: Cross multiply
    99,442.94x = 148,967.57 × 86,977.04
  4. Step 4: Simplify right side
    99,442.94x = 12,956,758,294.59
  5. Step 5: Solve for x
    x = 12,956,758,294.59/99,442.94
  6. Step 6: Final answer
    x = 130,293.40

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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.