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Finding the Fourth Proportional to 148,987.80, 208,859.40 and 148,987.80

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Solution

The fourth proportional to 148,987.80, 208,859.40 and 148,987.80 is: 208,859.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,987.80 : 208,859.40 = 148,987.80 : x
  2. Step 2: Convert to fraction form
    148,987.80/208,859.40 = 148,987.80/x
  3. Step 3: Cross multiply
    148,987.80x = 208,859.40 × 148,987.80
  4. Step 4: Simplify right side
    148,987.80x = 31,117,502,515.32
  5. Step 5: Solve for x
    x = 31,117,502,515.32/148,987.80
  6. Step 6: Final answer
    x = 208,859.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.