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Finding the Fourth Proportional to 112,275.76, 154,940.68 and 61,974.76

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Solution

The fourth proportional to 112,275.76, 154,940.68 and 61,974.76 is: 85,525.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,275.76 : 154,940.68 = 61,974.76 : x
  2. Step 2: Convert to fraction form
    112,275.76/154,940.68 = 61,974.76/x
  3. Step 3: Cross multiply
    112,275.76x = 154,940.68 × 61,974.76
  4. Step 4: Simplify right side
    112,275.76x = 9,602,411,457.24
  5. Step 5: Solve for x
    x = 9,602,411,457.24/112,275.76
  6. Step 6: Final answer
    x = 85,525.24

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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.