Home / 112,400.42-155,110.76-61,412.06

Finding the Fourth Proportional to 112,400.42, 155,110.76 and 61,412.06

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Solution

The fourth proportional to 112,400.42, 155,110.76 and 61,412.06 is: 84,747.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,400.42 : 155,110.76 = 61,412.06 : x
  2. Step 2: Convert to fraction form
    112,400.42/155,110.76 = 61,412.06/x
  3. Step 3: Cross multiply
    112,400.42x = 155,110.76 × 61,412.06
  4. Step 4: Simplify right side
    112,400.42x = 9,525,671,299.77
  5. Step 5: Solve for x
    x = 9,525,671,299.77/112,400.42
  6. Step 6: Final answer
    x = 84,747.65

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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.