Home / 112,716-155,547.80-64,968.96

Finding the Fourth Proportional to 112,716, 155,547.80 and 64,968.96

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Solution

The fourth proportional to 112,716, 155,547.80 and 64,968.96 is: 89,657.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,716 : 155,547.80 = 64,968.96 : x
  2. Step 2: Convert to fraction form
    112,716/155,547.80 = 64,968.96/x
  3. Step 3: Cross multiply
    112,716x = 155,547.80 × 64,968.96
  4. Step 4: Simplify right side
    112,716x = 10,105,778,796.29
  5. Step 5: Solve for x
    x = 10,105,778,796.29/112,716
  6. Step 6: Final answer
    x = 89,657.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.