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Finding the Fourth Proportional to 112,704, 155,536.40 and 62,403

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Solution

The fourth proportional to 112,704, 155,536.40 and 62,403 is: 86,118.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,704 : 155,536.40 = 62,403 : x
  2. Step 2: Convert to fraction form
    112,704/155,536.40 = 62,403/x
  3. Step 3: Cross multiply
    112,704x = 155,536.40 × 62,403
  4. Step 4: Simplify right side
    112,704x = 9,705,937,969.20
  5. Step 5: Solve for x
    x = 9,705,937,969.20/112,704
  6. Step 6: Final answer
    x = 86,118.84

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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.