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Finding the Fourth Proportional to 118,345.38, 163,317.93 and 64,631.98

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Solution

The fourth proportional to 118,345.38, 163,317.93 and 64,631.98 is: 89,192.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,345.38 : 163,317.93 = 64,631.98 : x
  2. Step 2: Convert to fraction form
    118,345.38/163,317.93 = 64,631.98/x
  3. Step 3: Cross multiply
    118,345.38x = 163,317.93 × 64,631.98
  4. Step 4: Simplify right side
    118,345.38x = 10,555,561,166.29
  5. Step 5: Solve for x
    x = 10,555,561,166.29/118,345.38
  6. Step 6: Final answer
    x = 89,192.84

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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.