Home / 90,686,670.40-136,030,005.60-87,159,476.80

Finding the Fourth Proportional to 90,686,670.40, 136,030,005.60 and 87,159,476.80

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Solution

The fourth proportional to 90,686,670.40, 136,030,005.60 and 87,159,476.80 is: 130,739,215.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,686,670.40 : 136,030,005.60 = 87,159,476.80 : x
  2. Step 2: Convert to fraction form
    90,686,670.40/136,030,005.60 = 87,159,476.80/x
  3. Step 3: Cross multiply
    90,686,670.40x = 136,030,005.60 × 87,159,476.80
  4. Step 4: Simplify right side
    90,686,670.40x = 11,856,304,117,197,070
  5. Step 5: Solve for x
    x = 11,856,304,117,197,070/90,686,670.40
  6. Step 6: Final answer
    x = 130,739,215.20

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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.