Home / 112,948.38-156,030.93-90,257.58

Finding the Fourth Proportional to 112,948.38, 156,030.93 and 90,257.58

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Solution

The fourth proportional to 112,948.38, 156,030.93 and 90,257.58 is: 124,685.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,948.38 : 156,030.93 = 90,257.58 : x
  2. Step 2: Convert to fraction form
    112,948.38/156,030.93 = 90,257.58/x
  3. Step 3: Cross multiply
    112,948.38x = 156,030.93 × 90,257.58
  4. Step 4: Simplify right side
    112,948.38x = 14,082,974,146.95
  5. Step 5: Solve for x
    x = 14,082,974,146.95/112,948.38
  6. Step 6: Final answer
    x = 124,685.05

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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.