Home / 145,999.62-201,432.30-81,458.40

Finding the Fourth Proportional to 145,999.62, 201,432.30 and 81,458.40

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Solution

The fourth proportional to 145,999.62, 201,432.30 and 81,458.40 is: 112,386.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,999.62 : 201,432.30 = 81,458.40 : x
  2. Step 2: Convert to fraction form
    145,999.62/201,432.30 = 81,458.40/x
  3. Step 3: Cross multiply
    145,999.62x = 201,432.30 × 81,458.40
  4. Step 4: Simplify right side
    145,999.62x = 16,408,352,866.32
  5. Step 5: Solve for x
    x = 16,408,352,866.32/145,999.62
  6. Step 6: Final answer
    x = 112,386.27

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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.