Home / 155,721.30-233,495.55-66,959.70

Finding the Fourth Proportional to 155,721.30, 233,495.55 and 66,959.70

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Solution

The fourth proportional to 155,721.30, 233,495.55 and 66,959.70 is: 100,402.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,721.30 : 233,495.55 = 66,959.70 : x
  2. Step 2: Convert to fraction form
    155,721.30/233,495.55 = 66,959.70/x
  3. Step 3: Cross multiply
    155,721.30x = 233,495.55 × 66,959.70
  4. Step 4: Simplify right side
    155,721.30x = 15,634,791,979.34
  5. Step 5: Solve for x
    x = 15,634,791,979.34/155,721.30
  6. Step 6: Final answer
    x = 100,402.40

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1.5x scale

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.