Home / 102,421.50-141,341.67-55,317.50

Finding the Fourth Proportional to 102,421.50, 141,341.67 and 55,317.50

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Solution

The fourth proportional to 102,421.50, 141,341.67 and 55,317.50 is: 76,338.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,421.50 : 141,341.67 = 55,317.50 : x
  2. Step 2: Convert to fraction form
    102,421.50/141,341.67 = 55,317.50/x
  3. Step 3: Cross multiply
    102,421.50x = 141,341.67 × 55,317.50
  4. Step 4: Simplify right side
    102,421.50x = 7,818,667,830.23
  5. Step 5: Solve for x
    x = 7,818,667,830.23/102,421.50
  6. Step 6: Final answer
    x = 76,338.15

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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.