Home / 112,440.40-155,152.74-72,208.65

Finding the Fourth Proportional to 112,440.40, 155,152.74 and 72,208.65

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Solution

The fourth proportional to 112,440.40, 155,152.74 and 72,208.65 is: 99,638.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,440.40 : 155,152.74 = 72,208.65 : x
  2. Step 2: Convert to fraction form
    112,440.40/155,152.74 = 72,208.65/x
  3. Step 3: Cross multiply
    112,440.40x = 155,152.74 × 72,208.65
  4. Step 4: Simplify right side
    112,440.40x = 11,203,370,751.81
  5. Step 5: Solve for x
    x = 11,203,370,751.81/112,440.40
  6. Step 6: Final answer
    x = 99,638.31

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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.