Home / 117,347.68-161,897.28-77,083.12

Finding the Fourth Proportional to 117,347.68, 161,897.28 and 77,083.12

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Solution

The fourth proportional to 117,347.68, 161,897.28 and 77,083.12 is: 106,346.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,347.68 : 161,897.28 = 77,083.12 : x
  2. Step 2: Convert to fraction form
    117,347.68/161,897.28 = 77,083.12/x
  3. Step 3: Cross multiply
    117,347.68x = 161,897.28 × 77,083.12
  4. Step 4: Simplify right side
    117,347.68x = 12,479,547,461.91
  5. Step 5: Solve for x
    x = 12,479,547,461.91/117,347.68
  6. Step 6: Final answer
    x = 106,346.78

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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.