Home / 103,640.07-155,462.73-77,510.67

Finding the Fourth Proportional to 103,640.07, 155,462.73 and 77,510.67

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Solution

The fourth proportional to 103,640.07, 155,462.73 and 77,510.67 is: 116,267.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,640.07 : 155,462.73 = 77,510.67 : x
  2. Step 2: Convert to fraction form
    103,640.07/155,462.73 = 77,510.67/x
  3. Step 3: Cross multiply
    103,640.07x = 155,462.73 × 77,510.67
  4. Step 4: Simplify right side
    103,640.07x = 12,050,020,362.33
  5. Step 5: Solve for x
    x = 12,050,020,362.33/103,640.07
  6. Step 6: Final answer
    x = 116,267.97

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1.5x scale

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.