Home / 112,123.76-154,730.16-61,822.80

Finding the Fourth Proportional to 112,123.76, 154,730.16 and 61,822.80

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Solution

The fourth proportional to 112,123.76, 154,730.16 and 61,822.80 is: 85,315.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,123.76 : 154,730.16 = 61,822.80 : x
  2. Step 2: Convert to fraction form
    112,123.76/154,730.16 = 61,822.80/x
  3. Step 3: Cross multiply
    112,123.76x = 154,730.16 × 61,822.80
  4. Step 4: Simplify right side
    112,123.76x = 9,565,851,735.65
  5. Step 5: Solve for x
    x = 9,565,851,735.65/112,123.76
  6. Step 6: Final answer
    x = 85,315.12

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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.