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Finding the Fourth Proportional to 112,117, 154,722.67 and 61,129.32

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Solution

The fourth proportional to 112,117, 154,722.67 and 61,129.32 is: 84,359.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,117 : 154,722.67 = 61,129.32 : x
  2. Step 2: Convert to fraction form
    112,117/154,722.67 = 61,129.32/x
  3. Step 3: Cross multiply
    112,117x = 154,722.67 × 61,129.32
  4. Step 4: Simplify right side
    112,117x = 9,458,090,832.07
  5. Step 5: Solve for x
    x = 9,458,090,832.07/112,117
  6. Step 6: Final answer
    x = 84,359.11

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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.