Home / 103,678.04-155,528.17-28,798.40

Finding the Fourth Proportional to 103,678.04, 155,528.17 and 28,798.40

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Solution

The fourth proportional to 103,678.04, 155,528.17 and 28,798.40 is: 43,200.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,678.04 : 155,528.17 = 28,798.40 : x
  2. Step 2: Convert to fraction form
    103,678.04/155,528.17 = 28,798.40/x
  3. Step 3: Cross multiply
    103,678.04x = 155,528.17 × 28,798.40
  4. Step 4: Simplify right side
    103,678.04x = 4,478,962,767.75
  5. Step 5: Solve for x
    x = 4,478,962,767.75/103,678.04
  6. Step 6: Final answer
    x = 43,200.69

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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.