Home / 112,108.07-154,707.95-61,120.67

Finding the Fourth Proportional to 112,108.07, 154,707.95 and 61,120.67

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Solution

The fourth proportional to 112,108.07, 154,707.95 and 61,120.67 is: 84,345.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,108.07 : 154,707.95 = 61,120.67 : x
  2. Step 2: Convert to fraction form
    112,108.07/154,707.95 = 61,120.67/x
  3. Step 3: Cross multiply
    112,108.07x = 154,707.95 × 61,120.67
  4. Step 4: Simplify right side
    112,108.07x = 9,455,852,479.18
  5. Step 5: Solve for x
    x = 9,455,852,479.18/112,108.07
  6. Step 6: Final answer
    x = 84,345.87

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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.