Home / 111,671.04-154,106.16-61,370

Finding the Fourth Proportional to 111,671.04, 154,106.16 and 61,370

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Solution

The fourth proportional to 111,671.04, 154,106.16 and 61,370 is: 84,690.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,671.04 : 154,106.16 = 61,370 : x
  2. Step 2: Convert to fraction form
    111,671.04/154,106.16 = 61,370/x
  3. Step 3: Cross multiply
    111,671.04x = 154,106.16 × 61,370
  4. Step 4: Simplify right side
    111,671.04x = 9,457,495,039.20
  5. Step 5: Solve for x
    x = 9,457,495,039.20/111,671.04
  6. Step 6: Final answer
    x = 84,690.67

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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.