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Finding the Fourth Proportional to 111,390.10, 167,085.15 and 97,830.70

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Solution

The fourth proportional to 111,390.10, 167,085.15 and 97,830.70 is: 146,746.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,390.10 : 167,085.15 = 97,830.70 : x
  2. Step 2: Convert to fraction form
    111,390.10/167,085.15 = 97,830.70/x
  3. Step 3: Cross multiply
    111,390.10x = 167,085.15 × 97,830.70
  4. Step 4: Simplify right side
    111,390.10x = 16,346,057,184.11
  5. Step 5: Solve for x
    x = 16,346,057,184.11/111,390.10
  6. Step 6: Final answer
    x = 146,746.05

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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.