Home / 145,042.47-200,155.45-80,507.92

Finding the Fourth Proportional to 145,042.47, 200,155.45 and 80,507.92

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Solution

The fourth proportional to 145,042.47, 200,155.45 and 80,507.92 is: 111,099.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,042.47 : 200,155.45 = 80,507.92 : x
  2. Step 2: Convert to fraction form
    145,042.47/200,155.45 = 80,507.92/x
  3. Step 3: Cross multiply
    145,042.47x = 200,155.45 × 80,507.92
  4. Step 4: Simplify right side
    145,042.47x = 16,114,098,254.51
  5. Step 5: Solve for x
    x = 16,114,098,254.51/145,042.47
  6. Step 6: Final answer
    x = 111,099.17

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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.