Home / 115,678.02-159,634.56-64,690.18

Finding the Fourth Proportional to 115,678.02, 159,634.56 and 64,690.18

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Solution

The fourth proportional to 115,678.02, 159,634.56 and 64,690.18 is: 89,271.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,678.02 : 159,634.56 = 64,690.18 : x
  2. Step 2: Convert to fraction form
    115,678.02/159,634.56 = 64,690.18/x
  3. Step 3: Cross multiply
    115,678.02x = 159,634.56 × 64,690.18
  4. Step 4: Simplify right side
    115,678.02x = 10,326,788,264.12
  5. Step 5: Solve for x
    x = 10,326,788,264.12/115,678.02
  6. Step 6: Final answer
    x = 89,271.82

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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.