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Finding the Fourth Proportional to 145,955.82, 201,302.42 and 100,623.41

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Solution

The fourth proportional to 145,955.82, 201,302.42 and 100,623.41 is: 138,779.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,955.82 : 201,302.42 = 100,623.41 : x
  2. Step 2: Convert to fraction form
    145,955.82/201,302.42 = 100,623.41/x
  3. Step 3: Cross multiply
    145,955.82x = 201,302.42 × 100,623.41
  4. Step 4: Simplify right side
    145,955.82x = 20,255,736,319.23
  5. Step 5: Solve for x
    x = 20,255,736,319.23/145,955.82
  6. Step 6: Final answer
    x = 138,779.91

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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.