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Finding the Fourth Proportional to 191,862.72, 264,772.04 and 106,985.20

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Solution

The fourth proportional to 191,862.72, 264,772.04 and 106,985.20 is: 147,640.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,862.72 : 264,772.04 = 106,985.20 : x
  2. Step 2: Convert to fraction form
    191,862.72/264,772.04 = 106,985.20/x
  3. Step 3: Cross multiply
    191,862.72x = 264,772.04 × 106,985.20
  4. Step 4: Simplify right side
    191,862.72x = 28,326,689,653.81
  5. Step 5: Solve for x
    x = 28,326,689,653.81/191,862.72
  6. Step 6: Final answer
    x = 147,640.40

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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.