Home / 153,115.29-211,298.91-85,130.13

Finding the Fourth Proportional to 153,115.29, 211,298.91 and 85,130.13

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Solution

The fourth proportional to 153,115.29, 211,298.91 and 85,130.13 is: 117,479.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,115.29 : 211,298.91 = 85,130.13 : x
  2. Step 2: Convert to fraction form
    153,115.29/211,298.91 = 85,130.13/x
  3. Step 3: Cross multiply
    153,115.29x = 211,298.91 × 85,130.13
  4. Step 4: Simplify right side
    153,115.29x = 17,987,903,677.16
  5. Step 5: Solve for x
    x = 17,987,903,677.16/153,115.29
  6. Step 6: Final answer
    x = 117,479.47

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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.