Home / 112,646.20-155,434.38-64,890.20

Finding the Fourth Proportional to 112,646.20, 155,434.38 and 64,890.20

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Solution

The fourth proportional to 112,646.20, 155,434.38 and 64,890.20 is: 89,538.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,646.20 : 155,434.38 = 64,890.20 : x
  2. Step 2: Convert to fraction form
    112,646.20/155,434.38 = 64,890.20/x
  3. Step 3: Cross multiply
    112,646.20x = 155,434.38 × 64,890.20
  4. Step 4: Simplify right side
    112,646.20x = 10,086,168,005.08
  5. Step 5: Solve for x
    x = 10,086,168,005.08/112,646.20
  6. Step 6: Final answer
    x = 89,538.47

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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.