Home / 112,870.60-155,763.18-61,887.98

Finding the Fourth Proportional to 112,870.60, 155,763.18 and 61,887.98

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Solution

The fourth proportional to 112,870.60, 155,763.18 and 61,887.98 is: 85,406.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,870.60 : 155,763.18 = 61,887.98 : x
  2. Step 2: Convert to fraction form
    112,870.60/155,763.18 = 61,887.98/x
  3. Step 3: Cross multiply
    112,870.60x = 155,763.18 × 61,887.98
  4. Step 4: Simplify right side
    112,870.60x = 9,639,868,568.58
  5. Step 5: Solve for x
    x = 9,639,868,568.58/112,870.60
  6. Step 6: Final answer
    x = 85,406.37

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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.