Home / 153,581.28-211,750.92-128,124.60

Finding the Fourth Proportional to 153,581.28, 211,750.92 and 128,124.60

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Solution

The fourth proportional to 153,581.28, 211,750.92 and 128,124.60 is: 176,652.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,581.28 : 211,750.92 = 128,124.60 : x
  2. Step 2: Convert to fraction form
    153,581.28/211,750.92 = 128,124.60/x
  3. Step 3: Cross multiply
    153,581.28x = 211,750.92 × 128,124.60
  4. Step 4: Simplify right side
    153,581.28x = 27,130,501,924.63
  5. Step 5: Solve for x
    x = 27,130,501,924.63/153,581.28
  6. Step 6: Final answer
    x = 176,652.40

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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.