Home / 112,521.28-155,211.52-74,281.12

Finding the Fourth Proportional to 112,521.28, 155,211.52 and 74,281.12

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Solution

The fourth proportional to 112,521.28, 155,211.52 and 74,281.12 is: 102,463.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,521.28 : 155,211.52 = 74,281.12 : x
  2. Step 2: Convert to fraction form
    112,521.28/155,211.52 = 74,281.12/x
  3. Step 3: Cross multiply
    112,521.28x = 155,211.52 × 74,281.12
  4. Step 4: Simplify right side
    112,521.28x = 11,529,285,542.50
  5. Step 5: Solve for x
    x = 11,529,285,542.50/112,521.28
  6. Step 6: Final answer
    x = 102,463.16

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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.