Home / 206,927,987.20-310,280,006.40-85,771,686.40

Finding the Fourth Proportional to 206,927,987.20, 310,280,006.40 and 85,771,686.40

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Solution

The fourth proportional to 206,927,987.20, 310,280,006.40 and 85,771,686.40 is: 128,611,116.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,927,987.20 : 310,280,006.40 = 85,771,686.40 : x
  2. Step 2: Convert to fraction form
    206,927,987.20/310,280,006.40 = 85,771,686.40/x
  3. Step 3: Cross multiply
    206,927,987.20x = 310,280,006.40 × 85,771,686.40
  4. Step 4: Simplify right side
    206,927,987.20x = 26,613,239,405,130,792
  5. Step 5: Solve for x
    x = 26,613,239,405,130,792/206,927,987.20
  6. Step 6: Final answer
    x = 128,611,116.19

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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.