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Finding the Fourth Proportional to 172,355.16, 237,752.99 and 103,426.80

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Solution

The fourth proportional to 172,355.16, 237,752.99 and 103,426.80 is: 142,670.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,355.16 : 237,752.99 = 103,426.80 : x
  2. Step 2: Convert to fraction form
    172,355.16/237,752.99 = 103,426.80/x
  3. Step 3: Cross multiply
    172,355.16x = 237,752.99 × 103,426.80
  4. Step 4: Simplify right side
    172,355.16x = 24,590,030,429.00
  5. Step 5: Solve for x
    x = 24,590,030,429.00/172,355.16
  6. Step 6: Final answer
    x = 142,670.69

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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.