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Finding the Fourth Proportional to 118,455.16, 163,467.74 and 64,740.16

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Solution

The fourth proportional to 118,455.16, 163,467.74 and 64,740.16 is: 89,341.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,455.16 : 163,467.74 = 64,740.16 : x
  2. Step 2: Convert to fraction form
    118,455.16/163,467.74 = 64,740.16/x
  3. Step 3: Cross multiply
    118,455.16x = 163,467.74 × 64,740.16
  4. Step 4: Simplify right side
    118,455.16x = 10,582,927,642.44
  5. Step 5: Solve for x
    x = 10,582,927,642.44/118,455.16
  6. Step 6: Final answer
    x = 89,341.21

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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.