Home / 153,727.02-212,143.55-85,748.40

Finding the Fourth Proportional to 153,727.02, 212,143.55 and 85,748.40

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Solution

The fourth proportional to 153,727.02, 212,143.55 and 85,748.40 is: 118,332.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,727.02 : 212,143.55 = 85,748.40 : x
  2. Step 2: Convert to fraction form
    153,727.02/212,143.55 = 85,748.40/x
  3. Step 3: Cross multiply
    153,727.02x = 212,143.55 × 85,748.40
  4. Step 4: Simplify right side
    153,727.02x = 18,190,969,554.08
  5. Step 5: Solve for x
    x = 18,190,969,554.08/153,727.02
  6. Step 6: Final answer
    x = 118,332.94

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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.