Home / 90,791,145.40-136,186,718.10-83,776,124.20

Finding the Fourth Proportional to 90,791,145.40, 136,186,718.10 and 83,776,124.20

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Solution

The fourth proportional to 90,791,145.40, 136,186,718.10 and 83,776,124.20 is: 125,664,186.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,791,145.40 : 136,186,718.10 = 83,776,124.20 : x
  2. Step 2: Convert to fraction form
    90,791,145.40/136,186,718.10 = 83,776,124.20/x
  3. Step 3: Cross multiply
    90,791,145.40x = 136,186,718.10 × 83,776,124.20
  4. Step 4: Simplify right side
    90,791,145.40x = 11,409,195,409,935,988
  5. Step 5: Solve for x
    x = 11,409,195,409,935,988/90,791,145.40
  6. Step 6: Final answer
    x = 125,664,186.30

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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.