Home / 103,543.08-155,086.95-85,570.04

Finding the Fourth Proportional to 103,543.08, 155,086.95 and 85,570.04

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Solution

The fourth proportional to 103,543.08, 155,086.95 and 85,570.04 is: 128,166.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,543.08 : 155,086.95 = 85,570.04 : x
  2. Step 2: Convert to fraction form
    103,543.08/155,086.95 = 85,570.04/x
  3. Step 3: Cross multiply
    103,543.08x = 155,086.95 × 85,570.04
  4. Step 4: Simplify right side
    103,543.08x = 13,270,796,351.22
  5. Step 5: Solve for x
    x = 13,270,796,351.22/103,543.08
  6. Step 6: Final answer
    x = 128,166.91

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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.