Home / 111,390.18-153,718.68-61,089.54

Finding the Fourth Proportional to 111,390.18, 153,718.68 and 61,089.54

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Solution

The fourth proportional to 111,390.18, 153,718.68 and 61,089.54 is: 84,303.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,390.18 : 153,718.68 = 61,089.54 : x
  2. Step 2: Convert to fraction form
    111,390.18/153,718.68 = 61,089.54/x
  3. Step 3: Cross multiply
    111,390.18x = 153,718.68 × 61,089.54
  4. Step 4: Simplify right side
    111,390.18x = 9,390,603,450.61
  5. Step 5: Solve for x
    x = 9,390,603,450.61/111,390.18
  6. Step 6: Final answer
    x = 84,303.69

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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.