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Finding the Fourth Proportional to 118,753.40, 163,875.29 and 65,038.86

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Solution

The fourth proportional to 118,753.40, 163,875.29 and 65,038.86 is: 89,751.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,753.40 : 163,875.29 = 65,038.86 : x
  2. Step 2: Convert to fraction form
    118,753.40/163,875.29 = 65,038.86/x
  3. Step 3: Cross multiply
    118,753.40x = 163,875.29 × 65,038.86
  4. Step 4: Simplify right side
    118,753.40x = 10,658,261,718.58
  5. Step 5: Solve for x
    x = 10,658,261,718.58/118,753.40
  6. Step 6: Final answer
    x = 89,751.21

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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.