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Finding the Fourth Proportional to 145,457.78, 200,730.48 and 81,794.22

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Solution

The fourth proportional to 145,457.78, 200,730.48 and 81,794.22 is: 112,875.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,457.78 : 200,730.48 = 81,794.22 : x
  2. Step 2: Convert to fraction form
    145,457.78/200,730.48 = 81,794.22/x
  3. Step 3: Cross multiply
    145,457.78x = 200,730.48 × 81,794.22
  4. Step 4: Simplify right side
    145,457.78x = 16,418,593,041.83
  5. Step 5: Solve for x
    x = 16,418,593,041.83/145,457.78
  6. Step 6: Final answer
    x = 112,875.32

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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.