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Finding the Fourth Proportional to 153,151.32, 229,726.98 and 69,987

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Solution

The fourth proportional to 153,151.32, 229,726.98 and 69,987 is: 104,980.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,151.32 : 229,726.98 = 69,987 : x
  2. Step 2: Convert to fraction form
    153,151.32/229,726.98 = 69,987/x
  3. Step 3: Cross multiply
    153,151.32x = 229,726.98 × 69,987
  4. Step 4: Simplify right side
    153,151.32x = 16,077,902,149.26
  5. Step 5: Solve for x
    x = 16,077,902,149.26/153,151.32
  6. Step 6: Final answer
    x = 104,980.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.