Home / 153,718.93-212,133.27-85,740.31

Finding the Fourth Proportional to 153,718.93, 212,133.27 and 85,740.31

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Solution

The fourth proportional to 153,718.93, 212,133.27 and 85,740.31 is: 118,322.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,718.93 : 212,133.27 = 85,740.31 : x
  2. Step 2: Convert to fraction form
    153,718.93/212,133.27 = 85,740.31/x
  3. Step 3: Cross multiply
    153,718.93x = 212,133.27 × 85,740.31
  4. Step 4: Simplify right side
    153,718.93x = 18,188,372,331.11
  5. Step 5: Solve for x
    x = 18,188,372,331.11/153,718.93
  6. Step 6: Final answer
    x = 118,322.27

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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.