Home / 113,631.23-156,719.08-99,989.82

Finding the Fourth Proportional to 113,631.23, 156,719.08 and 99,989.82

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Solution

The fourth proportional to 113,631.23, 156,719.08 and 99,989.82 is: 137,904.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,631.23 : 156,719.08 = 99,989.82 : x
  2. Step 2: Convert to fraction form
    113,631.23/156,719.08 = 99,989.82/x
  3. Step 3: Cross multiply
    113,631.23x = 156,719.08 × 99,989.82
  4. Step 4: Simplify right side
    113,631.23x = 15,670,312,599.77
  5. Step 5: Solve for x
    x = 15,670,312,599.77/113,631.23
  6. Step 6: Final answer
    x = 137,904.98

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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.