Home / 142,639.10-213,838.23-89,932.40

Finding the Fourth Proportional to 142,639.10, 213,838.23 and 89,932.40

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Solution

The fourth proportional to 142,639.10, 213,838.23 and 89,932.40 is: 134,822.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,639.10 : 213,838.23 = 89,932.40 : x
  2. Step 2: Convert to fraction form
    142,639.10/213,838.23 = 89,932.40/x
  3. Step 3: Cross multiply
    142,639.10x = 213,838.23 × 89,932.40
  4. Step 4: Simplify right side
    142,639.10x = 19,230,985,235.65
  5. Step 5: Solve for x
    x = 19,230,985,235.65/142,639.10
  6. Step 6: Final answer
    x = 134,822.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.