Home / 145,302.72-200,607.20-115,209.60

Finding the Fourth Proportional to 145,302.72, 200,607.20 and 115,209.60

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Solution

The fourth proportional to 145,302.72, 200,607.20 and 115,209.60 is: 159,060.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,302.72 : 200,607.20 = 115,209.60 : x
  2. Step 2: Convert to fraction form
    145,302.72/200,607.20 = 115,209.60/x
  3. Step 3: Cross multiply
    145,302.72x = 200,607.20 × 115,209.60
  4. Step 4: Simplify right side
    145,302.72x = 23,111,875,269.12
  5. Step 5: Solve for x
    x = 23,111,875,269.12/145,302.72
  6. Step 6: Final answer
    x = 159,060.17

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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.