Home / 112,486.10-155,237.62-64,738.40

Finding the Fourth Proportional to 112,486.10, 155,237.62 and 64,738.40

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Solution

The fourth proportional to 112,486.10, 155,237.62 and 64,738.40 is: 89,342.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,486.10 : 155,237.62 = 64,738.40 : x
  2. Step 2: Convert to fraction form
    112,486.10/155,237.62 = 64,738.40/x
  3. Step 3: Cross multiply
    112,486.10x = 155,237.62 × 64,738.40
  4. Step 4: Simplify right side
    112,486.10x = 10,049,835,138.61
  5. Step 5: Solve for x
    x = 10,049,835,138.61/112,486.10
  6. Step 6: Final answer
    x = 89,342.91

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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.