Home / 153,121.61-229,729.04-78,294.32

Finding the Fourth Proportional to 153,121.61, 229,729.04 and 78,294.32

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Solution

The fourth proportional to 153,121.61, 229,729.04 and 78,294.32 is: 117,465.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,121.61 : 229,729.04 = 78,294.32 : x
  2. Step 2: Convert to fraction form
    153,121.61/229,729.04 = 78,294.32/x
  3. Step 3: Cross multiply
    153,121.61x = 229,729.04 × 78,294.32
  4. Step 4: Simplify right side
    153,121.61x = 17,986,478,586.02
  5. Step 5: Solve for x
    x = 17,986,478,586.02/153,121.61
  6. Step 6: Final answer
    x = 117,465.32

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1.5x scale

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.