Home / 103,622.10-155,663.55-99,705.30

Finding the Fourth Proportional to 103,622.10, 155,663.55 and 99,705.30

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Solution

The fourth proportional to 103,622.10, 155,663.55 and 99,705.30 is: 149,779.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,622.10 : 155,663.55 = 99,705.30 : x
  2. Step 2: Convert to fraction form
    103,622.10/155,663.55 = 99,705.30/x
  3. Step 3: Cross multiply
    103,622.10x = 155,663.55 × 99,705.30
  4. Step 4: Simplify right side
    103,622.10x = 15,520,480,951.82
  5. Step 5: Solve for x
    x = 15,520,480,951.82/103,622.10
  6. Step 6: Final answer
    x = 149,779.64

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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.