Home / 137,041.13-205,421.67-77,751.56

Finding the Fourth Proportional to 137,041.13, 205,421.67 and 77,751.56

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Solution

The fourth proportional to 137,041.13, 205,421.67 and 77,751.56 is: 116,547.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,041.13 : 205,421.67 = 77,751.56 : x
  2. Step 2: Convert to fraction form
    137,041.13/205,421.67 = 77,751.56/x
  3. Step 3: Cross multiply
    137,041.13x = 205,421.67 × 77,751.56
  4. Step 4: Simplify right side
    137,041.13x = 15,971,855,813.86
  5. Step 5: Solve for x
    x = 15,971,855,813.86/137,041.13
  6. Step 6: Final answer
    x = 116,547.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.