Home / 138,905.80-208,330.61-39,070.60

Finding the Fourth Proportional to 138,905.80, 208,330.61 and 39,070.60

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Solution

The fourth proportional to 138,905.80, 208,330.61 and 39,070.60 is: 58,598.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,905.80 : 208,330.61 = 39,070.60 : x
  2. Step 2: Convert to fraction form
    138,905.80/208,330.61 = 39,070.60/x
  3. Step 3: Cross multiply
    138,905.80x = 208,330.61 × 39,070.60
  4. Step 4: Simplify right side
    138,905.80x = 8,139,601,931.07
  5. Step 5: Solve for x
    x = 8,139,601,931.07/138,905.80
  6. Step 6: Final answer
    x = 58,598.00

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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.