Home / 112,123.15-154,729.11-61,136.76

Finding the Fourth Proportional to 112,123.15, 154,729.11 and 61,136.76

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Solution

The fourth proportional to 112,123.15, 154,729.11 and 61,136.76 is: 84,368.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,123.15 : 154,729.11 = 61,136.76 : x
  2. Step 2: Convert to fraction form
    112,123.15/154,729.11 = 61,136.76/x
  3. Step 3: Cross multiply
    112,123.15x = 154,729.11 × 61,136.76
  4. Step 4: Simplify right side
    112,123.15x = 9,459,636,463.08
  5. Step 5: Solve for x
    x = 9,459,636,463.08/112,123.15
  6. Step 6: Final answer
    x = 84,368.27

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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.