Home / 112,685.93-155,500.66-61,688.89

Finding the Fourth Proportional to 112,685.93, 155,500.66 and 61,688.89

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Solution

The fourth proportional to 112,685.93, 155,500.66 and 61,688.89 is: 85,127.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,685.93 : 155,500.66 = 61,688.89 : x
  2. Step 2: Convert to fraction form
    112,685.93/155,500.66 = 61,688.89/x
  3. Step 3: Cross multiply
    112,685.93x = 155,500.66 × 61,688.89
  4. Step 4: Simplify right side
    112,685.93x = 9,592,663,109.67
  5. Step 5: Solve for x
    x = 9,592,663,109.67/112,685.93
  6. Step 6: Final answer
    x = 85,127.43

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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.