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Finding the Fourth Proportional to 145,894.04, 201,384 and 85,484.24

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Solution

The fourth proportional to 145,894.04, 201,384 and 85,484.24 is: 117,997.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,894.04 : 201,384 = 85,484.24 : x
  2. Step 2: Convert to fraction form
    145,894.04/201,384 = 85,484.24/x
  3. Step 3: Cross multiply
    145,894.04x = 201,384 × 85,484.24
  4. Step 4: Simplify right side
    145,894.04x = 17,215,158,188.16
  5. Step 5: Solve for x
    x = 17,215,158,188.16/145,894.04
  6. Step 6: Final answer
    x = 117,997.68

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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.