Home / 102,981.33-142,101.77-57,655.76

Finding the Fourth Proportional to 102,981.33, 142,101.77 and 57,655.76

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Solution

The fourth proportional to 102,981.33, 142,101.77 and 57,655.76 is: 79,557.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,981.33 : 142,101.77 = 57,655.76 : x
  2. Step 2: Convert to fraction form
    102,981.33/142,101.77 = 57,655.76/x
  3. Step 3: Cross multiply
    102,981.33x = 142,101.77 × 57,655.76
  4. Step 4: Simplify right side
    102,981.33x = 8,192,984,547.91
  5. Step 5: Solve for x
    x = 8,192,984,547.91/102,981.33
  6. Step 6: Final answer
    x = 79,557.96

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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.