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Finding the Fourth Proportional to 163,480.47, 225,523 and 99,707.55

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Solution

The fourth proportional to 163,480.47, 225,523 and 99,707.55 is: 137,547.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,480.47 : 225,523 = 99,707.55 : x
  2. Step 2: Convert to fraction form
    163,480.47/225,523 = 99,707.55/x
  3. Step 3: Cross multiply
    163,480.47x = 225,523 × 99,707.55
  4. Step 4: Simplify right side
    163,480.47x = 22,486,345,798.65
  5. Step 5: Solve for x
    x = 22,486,345,798.65/163,480.47
  6. Step 6: Final answer
    x = 137,547.60

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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.