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Finding the Fourth Proportional to 118,412.36, 163,411.41 and 64,700.70

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Solution

The fourth proportional to 118,412.36, 163,411.41 and 64,700.70 is: 89,288.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,412.36 : 163,411.41 = 64,700.70 : x
  2. Step 2: Convert to fraction form
    118,412.36/163,411.41 = 64,700.70/x
  3. Step 3: Cross multiply
    118,412.36x = 163,411.41 × 64,700.70
  4. Step 4: Simplify right side
    118,412.36x = 10,572,831,797.93
  5. Step 5: Solve for x
    x = 10,572,831,797.93/118,412.36
  6. Step 6: Final answer
    x = 89,288.24

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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.