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Finding the Fourth Proportional to 191,915.12, 264,890.32 and 130,762.40

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Solution

The fourth proportional to 191,915.12, 264,890.32 and 130,762.40 is: 180,484.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,915.12 : 264,890.32 = 130,762.40 : x
  2. Step 2: Convert to fraction form
    191,915.12/264,890.32 = 130,762.40/x
  3. Step 3: Cross multiply
    191,915.12x = 264,890.32 × 130,762.40
  4. Step 4: Simplify right side
    191,915.12x = 34,637,693,979.97
  5. Step 5: Solve for x
    x = 34,637,693,979.97/191,915.12
  6. Step 6: Final answer
    x = 180,484.45

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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.