Home / 191,612.00-287,541.02-128,503.40

Finding the Fourth Proportional to 191,612.00, 287,541.02 and 128,503.40

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Solution

The fourth proportional to 191,612.00, 287,541.02 and 128,503.40 is: 192,837.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,612.00 : 287,541.02 = 128,503.40 : x
  2. Step 2: Convert to fraction form
    191,612.00/287,541.02 = 128,503.40/x
  3. Step 3: Cross multiply
    191,612.00x = 287,541.02 × 128,503.40
  4. Step 4: Simplify right side
    191,612.00x = 36,949,997,593.02
  5. Step 5: Solve for x
    x = 36,949,997,593.02/191,612.00
  6. Step 6: Final answer
    x = 192,837.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.