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Finding the Fourth Proportional to 100,547.88, 138,740.64 and 58,098.18

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Solution

The fourth proportional to 100,547.88, 138,740.64 and 58,098.18 is: 80,166.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,547.88 : 138,740.64 = 58,098.18 : x
  2. Step 2: Convert to fraction form
    100,547.88/138,740.64 = 58,098.18/x
  3. Step 3: Cross multiply
    100,547.88x = 138,740.64 × 58,098.18
  4. Step 4: Simplify right side
    100,547.88x = 8,060,578,676.04
  5. Step 5: Solve for x
    x = 8,060,578,676.04/100,547.88
  6. Step 6: Final answer
    x = 80,166.57

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1.5x scale

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.