Home / 115,013.80-158,718.78-64,712.80

Finding the Fourth Proportional to 115,013.80, 158,718.78 and 64,712.80

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Solution

The fourth proportional to 115,013.80, 158,718.78 and 64,712.80 is: 89,303.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,013.80 : 158,718.78 = 64,712.80 : x
  2. Step 2: Convert to fraction form
    115,013.80/158,718.78 = 64,712.80/x
  3. Step 3: Cross multiply
    115,013.80x = 158,718.78 × 64,712.80
  4. Step 4: Simplify right side
    115,013.80x = 10,271,136,666.38
  5. Step 5: Solve for x
    x = 10,271,136,666.38/115,013.80
  6. Step 6: Final answer
    x = 89,303.52

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1.5x scale

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.