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Finding the Fourth Proportional to 118,362.70, 163,341.42 and 64,646.74

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Solution

The fourth proportional to 118,362.70, 163,341.42 and 64,646.74 is: 89,212.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,362.70 : 163,341.42 = 64,646.74 : x
  2. Step 2: Convert to fraction form
    118,362.70/163,341.42 = 64,646.74/x
  3. Step 3: Cross multiply
    118,362.70x = 163,341.42 × 64,646.74
  4. Step 4: Simplify right side
    118,362.70x = 10,559,490,309.97
  5. Step 5: Solve for x
    x = 10,559,490,309.97/118,362.70
  6. Step 6: Final answer
    x = 89,212.99

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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.