Home / 153,120.07-211,301.76-85,133.53

Finding the Fourth Proportional to 153,120.07, 211,301.76 and 85,133.53

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Solution

The fourth proportional to 153,120.07, 211,301.76 and 85,133.53 is: 117,482.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,120.07 : 211,301.76 = 85,133.53 : x
  2. Step 2: Convert to fraction form
    153,120.07/211,301.76 = 85,133.53/x
  3. Step 3: Cross multiply
    153,120.07x = 211,301.76 × 85,133.53
  4. Step 4: Simplify right side
    153,120.07x = 17,988,864,724.01
  5. Step 5: Solve for x
    x = 17,988,864,724.01/153,120.07
  6. Step 6: Final answer
    x = 117,482.08

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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.