Home / 153,015.51-211,158.61-85,031.24

Finding the Fourth Proportional to 153,015.51, 211,158.61 and 85,031.24

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Solution

The fourth proportional to 153,015.51, 211,158.61 and 85,031.24 is: 117,341.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,015.51 : 211,158.61 = 85,031.24 : x
  2. Step 2: Convert to fraction form
    153,015.51/211,158.61 = 85,031.24/x
  3. Step 3: Cross multiply
    153,015.51x = 211,158.61 × 85,031.24
  4. Step 4: Simplify right side
    153,015.51x = 17,955,079,077.83
  5. Step 5: Solve for x
    x = 17,955,079,077.83/153,015.51
  6. Step 6: Final answer
    x = 117,341.57

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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.