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Finding the Fourth Proportional to 151,510.67, 209,085.16 and 91,115.91

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Solution

The fourth proportional to 151,510.67, 209,085.16 and 91,115.91 is: 125,740.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,510.67 : 209,085.16 = 91,115.91 : x
  2. Step 2: Convert to fraction form
    151,510.67/209,085.16 = 91,115.91/x
  3. Step 3: Cross multiply
    151,510.67x = 209,085.16 × 91,115.91
  4. Step 4: Simplify right side
    151,510.67x = 19,050,984,393.11
  5. Step 5: Solve for x
    x = 19,050,984,393.11/151,510.67
  6. Step 6: Final answer
    x = 125,740.21

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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.