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Finding the Fourth Proportional to 118,715.16, 163,826.64 and 65,000.16

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Solution

The fourth proportional to 118,715.16, 163,826.64 and 65,000.16 is: 89,700.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,715.16 : 163,826.64 = 65,000.16 : x
  2. Step 2: Convert to fraction form
    118,715.16/163,826.64 = 65,000.16/x
  3. Step 3: Cross multiply
    118,715.16x = 163,826.64 × 65,000.16
  4. Step 4: Simplify right side
    118,715.16x = 10,648,757,812.26
  5. Step 5: Solve for x
    x = 10,648,757,812.26/118,715.16
  6. Step 6: Final answer
    x = 89,700.07

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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.