Home / 103,622.35-155,663.93-100,857.55

Finding the Fourth Proportional to 103,622.35, 155,663.93 and 100,857.55

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Solution

The fourth proportional to 103,622.35, 155,663.93 and 100,857.55 is: 151,510.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,622.35 : 155,663.93 = 100,857.55 : x
  2. Step 2: Convert to fraction form
    103,622.35/155,663.93 = 100,857.55/x
  3. Step 3: Cross multiply
    103,622.35x = 155,663.93 × 100,857.55
  4. Step 4: Simplify right side
    103,622.35x = 15,699,882,603.17
  5. Step 5: Solve for x
    x = 15,699,882,603.17/103,622.35
  6. Step 6: Final answer
    x = 151,510.58

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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.