Home / 100,521.93-151,488.87-90,539.19

Finding the Fourth Proportional to 100,521.93, 151,488.87 and 90,539.19

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Solution

The fourth proportional to 100,521.93, 151,488.87 and 90,539.19 is: 136,444.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,521.93 : 151,488.87 = 90,539.19 : x
  2. Step 2: Convert to fraction form
    100,521.93/151,488.87 = 90,539.19/x
  3. Step 3: Cross multiply
    100,521.93x = 151,488.87 × 90,539.19
  4. Step 4: Simplify right side
    100,521.93x = 13,715,679,583.82
  5. Step 5: Solve for x
    x = 13,715,679,583.82/100,521.93
  6. Step 6: Final answer
    x = 136,444.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.