Home / 140,547.10-210,856.65-81,276.70

Finding the Fourth Proportional to 140,547.10, 210,856.65 and 81,276.70

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Solution

The fourth proportional to 140,547.10, 210,856.65 and 81,276.70 is: 121,935.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,547.10 : 210,856.65 = 81,276.70 : x
  2. Step 2: Convert to fraction form
    140,547.10/210,856.65 = 81,276.70/x
  3. Step 3: Cross multiply
    140,547.10x = 210,856.65 × 81,276.70
  4. Step 4: Simplify right side
    140,547.10x = 17,137,732,685.06
  5. Step 5: Solve for x
    x = 17,137,732,685.06/140,547.10
  6. Step 6: Final answer
    x = 121,935.87

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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.