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Finding the Fourth Proportional to 124,586.58, 171,869.70 and 81,547.11

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Solution

The fourth proportional to 124,586.58, 171,869.70 and 81,547.11 is: 112,495.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,586.58 : 171,869.70 = 81,547.11 : x
  2. Step 2: Convert to fraction form
    124,586.58/171,869.70 = 81,547.11/x
  3. Step 3: Cross multiply
    124,586.58x = 171,869.70 × 81,547.11
  4. Step 4: Simplify right side
    124,586.58x = 14,015,477,331.57
  5. Step 5: Solve for x
    x = 14,015,477,331.57/124,586.58
  6. Step 6: Final answer
    x = 112,495.88

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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.