Home / 145,205.28-200,376.23-80,678.58

Finding the Fourth Proportional to 145,205.28, 200,376.23 and 80,678.58

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Solution

The fourth proportional to 145,205.28, 200,376.23 and 80,678.58 is: 111,332.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,205.28 : 200,376.23 = 80,678.58 : x
  2. Step 2: Convert to fraction form
    145,205.28/200,376.23 = 80,678.58/x
  3. Step 3: Cross multiply
    145,205.28x = 200,376.23 × 80,678.58
  4. Step 4: Simplify right side
    145,205.28x = 16,166,069,298.76
  5. Step 5: Solve for x
    x = 16,166,069,298.76/145,205.28
  6. Step 6: Final answer
    x = 111,332.52

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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.