Home / 112,440.51-155,152.91-72,208.77

Finding the Fourth Proportional to 112,440.51, 155,152.91 and 72,208.77

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Solution

The fourth proportional to 112,440.51, 155,152.91 and 72,208.77 is: 99,638.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,440.51 : 155,152.91 = 72,208.77 : x
  2. Step 2: Convert to fraction form
    112,440.51/155,152.91 = 72,208.77/x
  3. Step 3: Cross multiply
    112,440.51x = 155,152.91 × 72,208.77
  4. Step 4: Simplify right side
    112,440.51x = 11,203,400,793.02
  5. Step 5: Solve for x
    x = 11,203,400,793.02/112,440.51
  6. Step 6: Final answer
    x = 99,638.47

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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.