Home / 208,580.32-287,819.53-128,011.24

Finding the Fourth Proportional to 208,580.32, 287,819.53 and 128,011.24

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Solution

The fourth proportional to 208,580.32, 287,819.53 and 128,011.24 is: 176,642.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,580.32 : 287,819.53 = 128,011.24 : x
  2. Step 2: Convert to fraction form
    208,580.32/287,819.53 = 128,011.24/x
  3. Step 3: Cross multiply
    208,580.32x = 287,819.53 × 128,011.24
  4. Step 4: Simplify right side
    208,580.32x = 36,844,134,931.52
  5. Step 5: Solve for x
    x = 36,844,134,931.52/208,580.32
  6. Step 6: Final answer
    x = 176,642.43

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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.