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Finding the Fourth Proportional to 191,490.52, 264,246.40 and 105,432.72

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Solution

The fourth proportional to 191,490.52, 264,246.40 and 105,432.72 is: 145,491.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,490.52 : 264,246.40 = 105,432.72 : x
  2. Step 2: Convert to fraction form
    191,490.52/264,246.40 = 105,432.72/x
  3. Step 3: Cross multiply
    191,490.52x = 264,246.40 × 105,432.72
  4. Step 4: Simplify right side
    191,490.52x = 27,860,216,702.21
  5. Step 5: Solve for x
    x = 27,860,216,702.21/191,490.52
  6. Step 6: Final answer
    x = 145,491.36

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1.5x scale

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.