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Finding the Fourth Proportional to 112,699.76, 155,530.52 and 62,398.76

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Solution

The fourth proportional to 112,699.76, 155,530.52 and 62,398.76 is: 86,112.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,699.76 : 155,530.52 = 62,398.76 : x
  2. Step 2: Convert to fraction form
    112,699.76/155,530.52 = 62,398.76/x
  3. Step 3: Cross multiply
    112,699.76x = 155,530.52 × 62,398.76
  4. Step 4: Simplify right side
    112,699.76x = 9,704,911,590.16
  5. Step 5: Solve for x
    x = 9,704,911,590.16/112,699.76
  6. Step 6: Final answer
    x = 86,112.97

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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.