Home / 102,588.61-141,636.29-66,309.05

Finding the Fourth Proportional to 102,588.61, 141,636.29 and 66,309.05

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Solution

The fourth proportional to 102,588.61, 141,636.29 and 66,309.05 is: 91,547.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,588.61 : 141,636.29 = 66,309.05 : x
  2. Step 2: Convert to fraction form
    102,588.61/141,636.29 = 66,309.05/x
  3. Step 3: Cross multiply
    102,588.61x = 141,636.29 × 66,309.05
  4. Step 4: Simplify right side
    102,588.61x = 9,391,767,835.42
  5. Step 5: Solve for x
    x = 9,391,767,835.42/102,588.61
  6. Step 6: Final answer
    x = 91,547.86

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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.