Home / 103,929.45-143,421.75-56,182.38

Finding the Fourth Proportional to 103,929.45, 143,421.75 and 56,182.38

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Solution

The fourth proportional to 103,929.45, 143,421.75 and 56,182.38 is: 77,531.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,929.45 : 143,421.75 = 56,182.38 : x
  2. Step 2: Convert to fraction form
    103,929.45/143,421.75 = 56,182.38/x
  3. Step 3: Cross multiply
    103,929.45x = 143,421.75 × 56,182.38
  4. Step 4: Simplify right side
    103,929.45x = 8,057,775,258.77
  5. Step 5: Solve for x
    x = 8,057,775,258.77/103,929.45
  6. Step 6: Final answer
    x = 77,531.20

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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.