Home / 112,403.55-155,115.07-61,415.19

Finding the Fourth Proportional to 112,403.55, 155,115.07 and 61,415.19

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Solution

The fourth proportional to 112,403.55, 155,115.07 and 61,415.19 is: 84,751.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,403.55 : 155,115.07 = 61,415.19 : x
  2. Step 2: Convert to fraction form
    112,403.55/155,115.07 = 61,415.19/x
  3. Step 3: Cross multiply
    112,403.55x = 155,115.07 × 61,415.19
  4. Step 4: Simplify right side
    112,403.55x = 9,526,421,495.91
  5. Step 5: Solve for x
    x = 9,526,421,495.91/112,403.55
  6. Step 6: Final answer
    x = 84,751.96

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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.