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Finding the Fourth Proportional to 145,878.48, 201,300.84 and 85,441.32

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Solution

The fourth proportional to 145,878.48, 201,300.84 and 85,441.32 is: 117,902.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,878.48 : 201,300.84 = 85,441.32 : x
  2. Step 2: Convert to fraction form
    145,878.48/201,300.84 = 85,441.32/x
  3. Step 3: Cross multiply
    145,878.48x = 201,300.84 × 85,441.32
  4. Step 4: Simplify right side
    145,878.48x = 17,199,409,486.71
  5. Step 5: Solve for x
    x = 17,199,409,486.71/145,878.48
  6. Step 6: Final answer
    x = 117,902.31

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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.