Home / 112,688.79-168,787.53-56,430.78

Finding the Fourth Proportional to 112,688.79, 168,787.53 and 56,430.78

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Solution

The fourth proportional to 112,688.79, 168,787.53 and 56,430.78 is: 84,523.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,688.79 : 168,787.53 = 56,430.78 : x
  2. Step 2: Convert to fraction form
    112,688.79/168,787.53 = 56,430.78/x
  3. Step 3: Cross multiply
    112,688.79x = 168,787.53 × 56,430.78
  4. Step 4: Simplify right side
    112,688.79x = 9,524,811,972.17
  5. Step 5: Solve for x
    x = 9,524,811,972.17/112,688.79
  6. Step 6: Final answer
    x = 84,523.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.