Home / 115,985.02-160,136.46-89,079.46

Finding the Fourth Proportional to 115,985.02, 160,136.46 and 89,079.46

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Solution

The fourth proportional to 115,985.02, 160,136.46 and 89,079.46 is: 122,988.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,985.02 : 160,136.46 = 89,079.46 : x
  2. Step 2: Convert to fraction form
    115,985.02/160,136.46 = 89,079.46/x
  3. Step 3: Cross multiply
    115,985.02x = 160,136.46 × 89,079.46
  4. Step 4: Simplify right side
    115,985.02x = 14,264,869,383.11
  5. Step 5: Solve for x
    x = 14,264,869,383.11/115,985.02
  6. Step 6: Final answer
    x = 122,988.89

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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.