Home / 112,977.71-155,904.02-61,989.17

Finding the Fourth Proportional to 112,977.71, 155,904.02 and 61,989.17

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Solution

The fourth proportional to 112,977.71, 155,904.02 and 61,989.17 is: 85,542.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,977.71 : 155,904.02 = 61,989.17 : x
  2. Step 2: Convert to fraction form
    112,977.71/155,904.02 = 61,989.17/x
  3. Step 3: Cross multiply
    112,977.71x = 155,904.02 × 61,989.17
  4. Step 4: Simplify right side
    112,977.71x = 9,664,359,710.00
  5. Step 5: Solve for x
    x = 9,664,359,710.00/112,977.71
  6. Step 6: Final answer
    x = 85,542.18

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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.