Home / 102,870.66-154,312.01-39,691.12

Finding the Fourth Proportional to 102,870.66, 154,312.01 and 39,691.12

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Solution

The fourth proportional to 102,870.66, 154,312.01 and 39,691.12 is: 59,539.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,870.66 : 154,312.01 = 39,691.12 : x
  2. Step 2: Convert to fraction form
    102,870.66/154,312.01 = 39,691.12/x
  3. Step 3: Cross multiply
    102,870.66x = 154,312.01 × 39,691.12
  4. Step 4: Simplify right side
    102,870.66x = 6,124,816,070.96
  5. Step 5: Solve for x
    x = 6,124,816,070.96/102,870.66
  6. Step 6: Final answer
    x = 59,539.00

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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.