Home / 151,412.40-208,946.35-83,435.64

Finding the Fourth Proportional to 151,412.40, 208,946.35 and 83,435.64

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Solution

The fourth proportional to 151,412.40, 208,946.35 and 83,435.64 is: 115,139.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,412.40 : 208,946.35 = 83,435.64 : x
  2. Step 2: Convert to fraction form
    151,412.40/208,946.35 = 83,435.64/x
  3. Step 3: Cross multiply
    151,412.40x = 208,946.35 × 83,435.64
  4. Step 4: Simplify right side
    151,412.40x = 17,433,572,960.28
  5. Step 5: Solve for x
    x = 17,433,572,960.28/151,412.40
  6. Step 6: Final answer
    x = 115,139.67

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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.