Home / 145,611.04-200,910-81,925.60

Finding the Fourth Proportional to 145,611.04, 200,910 and 81,925.60

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Solution

The fourth proportional to 145,611.04, 200,910 and 81,925.60 is: 113,038.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,611.04 : 200,910 = 81,925.60 : x
  2. Step 2: Convert to fraction form
    145,611.04/200,910 = 81,925.60/x
  3. Step 3: Cross multiply
    145,611.04x = 200,910 × 81,925.60
  4. Step 4: Simplify right side
    145,611.04x = 16,459,672,296.00
  5. Step 5: Solve for x
    x = 16,459,672,296.00/145,611.04
  6. Step 6: Final answer
    x = 113,038.63

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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.