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Finding the Fourth Proportional to 145,483.69, 200,737.40 and 85,042.64

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Solution

The fourth proportional to 145,483.69, 200,737.40 and 85,042.64 is: 117,341.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,483.69 : 200,737.40 = 85,042.64 : x
  2. Step 2: Convert to fraction form
    145,483.69/200,737.40 = 85,042.64/x
  3. Step 3: Cross multiply
    145,483.69x = 200,737.40 × 85,042.64
  4. Step 4: Simplify right side
    145,483.69x = 17,071,238,230.13
  5. Step 5: Solve for x
    x = 17,071,238,230.13/145,483.69
  6. Step 6: Final answer
    x = 117,341.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.