Home / 140,316.16-193,639.20-76,656.64

Finding the Fourth Proportional to 140,316.16, 193,639.20 and 76,656.64

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Solution

The fourth proportional to 140,316.16, 193,639.20 and 76,656.64 is: 105,787.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,316.16 : 193,639.20 = 76,656.64 : x
  2. Step 2: Convert to fraction form
    140,316.16/193,639.20 = 76,656.64/x
  3. Step 3: Cross multiply
    140,316.16x = 193,639.20 × 76,656.64
  4. Step 4: Simplify right side
    140,316.16x = 14,843,730,444.29
  5. Step 5: Solve for x
    x = 14,843,730,444.29/140,316.16
  6. Step 6: Final answer
    x = 105,787.75

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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.