Home / 105,302.52-145,233.85-79,547.02

Finding the Fourth Proportional to 105,302.52, 145,233.85 and 79,547.02

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Solution

The fourth proportional to 105,302.52, 145,233.85 and 79,547.02 is: 109,711.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,302.52 : 145,233.85 = 79,547.02 : x
  2. Step 2: Convert to fraction form
    105,302.52/145,233.85 = 79,547.02/x
  3. Step 3: Cross multiply
    105,302.52x = 145,233.85 × 79,547.02
  4. Step 4: Simplify right side
    105,302.52x = 11,552,919,970.63
  5. Step 5: Solve for x
    x = 11,552,919,970.63/105,302.52
  6. Step 6: Final answer
    x = 109,711.71

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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.