Home / 207,715.12-286,646.48-112,221.52

Finding the Fourth Proportional to 207,715.12, 286,646.48 and 112,221.52

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Solution

The fourth proportional to 207,715.12, 286,646.48 and 112,221.52 is: 154,865.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,715.12 : 286,646.48 = 112,221.52 : x
  2. Step 2: Convert to fraction form
    207,715.12/286,646.48 = 112,221.52/x
  3. Step 3: Cross multiply
    207,715.12x = 286,646.48 × 112,221.52
  4. Step 4: Simplify right side
    207,715.12x = 32,167,903,688.25
  5. Step 5: Solve for x
    x = 32,167,903,688.25/207,715.12
  6. Step 6: Final answer
    x = 154,865.49

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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.